Nursing During a New Pregnancy
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.
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By Age
What to expect by age
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.
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.
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 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
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
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.