Pregnancy Guide & Tools
Last reviewed:
Content reviewed against published ACOG, AAP, CDC guidelines
Evidence-based pregnancy resources to help you track your pregnancy, prepare for delivery, and understand what to expect at each stage.
Key takeaways
- A full-term pregnancy is 39-40 weeks, divided into three trimesters
- Morning sickness typically peaks at weeks 8-10 and improves in the second trimester
- The anatomy scan happens at weeks 18-22
- Call your provider immediately for vaginal bleeding, severe headache, or decreased fetal movement
- Pack your hospital bag by week 36
Pregnancy tools & calculators
Pregnancy Tracker
Week-by-week pregnancy tracking with milestones and symptoms
Due Date Calculator
Calculate your estimated due date from LMP or conception date
Ovulation Calculator
Find your most fertile days to plan or track conception
Contraction Timer
Time contractions to know when to head to the hospital
Kick Counter
Track fetal movement to monitor your baby's wellbeing
Gender Predictor
Fun predictions based on various old wives' tales
BMI Calculator
Calculate pre-pregnancy and current BMI for healthy weight gain tracking
Pregnancy guides
Signs of Labor
How to recognize true labor vs. false alarms
Creating a Birth Plan
Flexible framework for communicating your preferences
Prenatal Tests Guide
Understanding routine screenings and diagnostic tests
Pregnancy Nutrition
What to eat, what to avoid, and supplements you need
Safe Exercise
Staying active safely throughout pregnancy
Warning Signs
Pregnancy complications and when to seek help
What happens in the first trimester?
Weeks 1-12
- All major organs begin to form
- Heart starts beating around week 6
- Morning sickness peaks around weeks 8-10
- First prenatal visit typically between weeks 8-12
- Nuchal translucency screening at weeks 11-13
- Risk of miscarriage decreases significantly after week 12
What happens in the second trimester?
Weeks 13-26
- Morning sickness typically improves
- Anatomy scan (detailed ultrasound) at weeks 18-22
- You may begin to feel baby move (quickening) around weeks 16-22
- Glucose screening test at weeks 24-28
- Baby can hear sounds from outside the womb
- Viability milestone around 24 weeks
What happens in the third trimester?
Weeks 27-40
- Baby gains weight rapidly, building fat stores
- Braxton Hicks contractions may begin
- Group B strep test at weeks 36-37
- Baby moves into head-down position (usually by week 36)
- Full term is considered 39-40 weeks
- Pack your hospital bag by week 36
When should I call my doctor during pregnancy?
Contact your healthcare provider immediately if you experience:
- Vaginal bleeding
- Severe abdominal pain or cramping
- Persistent severe headache with vision changes
- Sudden swelling of face, hands, or feet
- Fever above 100.4°F (38°C)
- Decreased fetal movement after 28 weeks
- Leaking fluid from the vagina
- Regular contractions before 37 weeks
Preparing for baby
Resources to help you get ready for your new arrival:
Frequently asked questions
When is the first prenatal visit?
When can I find out the sex of my baby?
When should I pack my hospital bag?
What is the difference between Braxton Hicks and real contractions?
Bottom line
Pregnancy is a journey with many normal variations. Every trimester brings new changes and new questions. Your OB-GYN or midwife is your best resource for personalized guidance throughout your pregnancy.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
All content follows our editorial policy and is reviewed against published clinical guidelines.
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