Nursing During a New Pregnancy
Medically reviewed by Dr. Lisa Okafor, MD, FACOG · Board-Certified OB-GYN
Content reviewed against published ACOG, AAP, NIH guidelines
Last reviewed:
Your health matters just as much as your baby's. If you are dealing with nursing during a new pregnancy, here is what you need to know.
The short answer
Breastfeeding during a new pregnancy is generally safe for most people with uncomplicated pregnancies. Nipple stimulation releases oxytocin, which can cause mild uterine contractions, but these are not usually strong enough to cause preterm labor in healthy pregnancies. Milk supply often decreases and taste may change as pregnancy progresses, leading some nurslings to wean naturally.
Key takeaways
- Breastfeeding during a new pregnancy is generally safe for most people with uncomplicated pregnancies. Nipple stimulation releases oxytocin, which can cause mild uterine contractions, but these are not usually strong enough to cause preterm labor in healthy pregnancies. Milk supply often decreases and taste may change as pregnancy progresses, leading some nurslings to wean naturally.
- Usually normal when: Increased nipple tenderness while nursing during pregnancy
- Call your doctor if: Persistent contractions that do not stop after you stop nursing, especially before 37 weeks
- Varies by age — see the age-by-age breakdown below
“About 1 in 8 women experience symptoms of postpartum depression. If you have symptoms of depression that last longer than 2 weeks, tell your health care provider.”
Thousands of parents search for this exact thing. You are not alone.
What Parents Should Know
According to ACOG, AAP, NIH guidelines, breastfeeding during a new pregnancy is generally safe for most people with uncomplicated pregnancies. Nipple stimulation releases oxytocin, which can cause mild uterine contractions, but these are not usually strong enough to cause preterm labor in healthy pregnancies. Milk supply often decreases and taste may change as pregnancy progresses, leading some nurslings to wean naturally. At First trimester, you may notice increased nipple sensitivity and soreness when nursing due to pregnancy hormones. Milk supply may begin to decrease. These changes are normal. If you have a history of preterm labor, miscarriage, or cervical insufficiency, discuss continued breastfeeding with your provider, as some may recommend weaning. It is generally considered normal when increased nipple tenderness while nursing during pregnancy. However, you should contact your pediatrician promptly if persistent contractions that do not stop after you stop nursing, especially before 37 weeks.
Normal vs. Concerning
By Age
What to expect by age
First trimester
You may notice increased nipple sensitivity and soreness when nursing due to pregnancy hormones. Milk supply may begin to decrease. These changes are normal. If you have a history of preterm labor, miscarriage, or cervical insufficiency, discuss continued breastfeeding with your provider, as some may recommend weaning.
Second trimester
Milk often transitions to colostrum around mid-pregnancy, which may cause your older child to wean naturally due to the taste change and reduced volume. If you plan to tandem nurse (breastfeed both children after birth), this is a valid and healthy choice. Ensure adequate nutrition and hydration for yourself.
Third trimester
Contractions from breastfeeding (sometimes called Braxton Hicks) are usually mild and benign. If you experience regular contractions while nursing, stop the feeding and rest. Discuss your plans with your provider. After the new baby arrives, the older child may want to nurse more - this is normal in tandem nursing.
What to Tell Your Pediatrician
- Describe when you first noticed nursing during a new pregnancy and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if you have a history of preterm labor or cervical issues.
- Mention if you want guidance on nutrition for breastfeeding during pregnancy.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Increased nipple tenderness while nursing during pregnancy
- Decreased milk supply
- Older child weaning naturally due to taste or supply changes
- You have a history of preterm labor or cervical issues
- You want guidance on nutrition for breastfeeding during pregnancy
- You are experiencing regular contractions while nursing
- Persistent contractions that do not stop after you stop nursing, especially before 37 weeks
- Vaginal bleeding while breastfeeding during pregnancy
What You Can Do at Home
- Keep track of when you notice nursing during a new pregnancy — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that increased nipple tenderness while nursing during pregnancy — this is generally within the range of normal.
- At First trimester, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Prioritize your own rest and nutrition. Accept help when offered, and do not hesitate to reach out to your healthcare provider.
- While monitoring at home, seek immediate care if persistent contractions that do not stop after you stop nursing, especially before 37 weeks.
Related Conditions
Antenatal Colostrum Harvesting
Antenatal colostrum harvesting involves hand-expressing small amounts of colostrum (first milk) in the final weeks of pregnancy to store for after birth. It can be beneficial for parents with gestational diabetes, planned cesareans, or expected feeding challenges. It is generally considered safe after 36-37 weeks in uncomplicated pregnancies, but always discuss with your provider first.
Preterm Labor Signs
Preterm labor is labor that begins before 37 weeks of pregnancy and affects about 10% of pregnancies. Recognizing the signs early is critical because treatment can often delay delivery, giving the baby more time to develop. Signs include regular contractions, lower back pain, pelvic pressure, vaginal discharge changes, and fluid leaking. Contact your provider immediately if you suspect preterm labor.
Related Resources
Postpartum Recovery Guide
Week-by-week postpartum recovery timeline and warning signs.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is nursing during a new pregnancy normal?
When should I call the doctor about nursing during a new pregnancy?
When is nursing during a new pregnancy normal?
What causes nursing during a new pregnancy?
What should I mention to my pediatrician about nursing during a new pregnancy?
Is nursing during a new pregnancy normal at First trimester?
Is nursing during a new pregnancy normal at Second trimester?
Should I go to the ER for nursing during a new pregnancy?
Does nursing during a new pregnancy go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Nursing During a New Pregnancy.
Things to mention
- Describe when you first noticed nursing during a new pregnancy and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if you have a history of preterm labor or cervical issues.
- Mention if you want guidance on nutrition for breastfeeding during pregnancy.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- You have a history of preterm labor or cervical issues
- You want guidance on nutrition for breastfeeding during pregnancy
- You are experiencing regular contractions while nursing
Urgent signs to report immediately
- Persistent contractions that do not stop after you stop nursing, especially before 37 weeks
- Vaginal bleeding while breastfeeding during pregnancy
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of nursing during a new pregnancy are normal. Talk to your pediatrician if persistent contractions that do not stop after you stop nursing, especially before 37 weeks.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
Was this page helpful?
Related Maternal Concerns
Antenatal Colostrum Harvesting
Antenatal colostrum harvesting involves hand-expressing small amounts of colostrum (first milk) in the final weeks of pregnancy to store for after birth. It can be beneficial for parents with gestational diabetes, planned cesareans, or expected feeding challenges. It is generally considered safe after 36-37 weeks in uncomplicated pregnancies, but always discuss with your provider first.
Preterm Labor Signs
Preterm labor is labor that begins before 37 weeks of pregnancy and affects about 10% of pregnancies. Recognizing the signs early is critical because treatment can often delay delivery, giving the baby more time to develop. Signs include regular contractions, lower back pain, pelvic pressure, vaginal discharge changes, and fluid leaking. Contact your provider immediately if you suspect preterm labor.
Dealing with Abnormal Prenatal Screening Results
An abnormal prenatal screening result can be terrifying, but it is important to understand that screening tests are designed to cast a wide net and have significant false-positive rates. Most people with abnormal screening results go on to have healthy babies after further testing confirms the baby is fine. An abnormal screening is a reason for more information, not a diagnosis.
Pregnancy Over 35 (Advanced Maternal Age)
While pregnancy after 35 carries some increased risks (including chromosomal abnormalities, gestational diabetes, and hypertension), the vast majority of people over 35 have healthy pregnancies and healthy babies. The term "geriatric pregnancy" is outdated and does not reflect reality. With appropriate prenatal care and monitoring, outcomes are excellent.
Amniocentesis Questions and Fears
Amniocentesis is a diagnostic test performed between 15-20 weeks that analyzes amniotic fluid to detect chromosomal conditions and genetic disorders with over 99% accuracy. The risk of pregnancy loss from the procedure is approximately 1 in 500-1,000 when performed by an experienced provider. Understanding the actual risks can help you make an informed decision.
20-Week Anatomy Scan Unexpected Findings
The 20-week anatomy scan checks your baby's major organs, structures, and growth. Most scans are completely normal. When unexpected findings are identified, they range from minor variants that resolve on their own to conditions that need further evaluation. Many findings require nothing more than a follow-up ultrasound to confirm the baby is developing well.