Pregnancy Timeline
Explore your complete pregnancy timeline with weekly milestones, baby size comparisons, key appointments, and development stages organized by trimester.
How It Works
Enter either your last menstrual period (LMP) date or your expected due date, and the calculator generates a personalized 40-week pregnancy timeline. Each week includes:
- Baby size comparisons – fun fruit and vegetable comparisons to help visualize your baby's growth
- Development milestones – what's happening with your baby's growth each week
- Key appointments – important prenatal tests and check-ups to expect
- Personalized dates – the exact calendar date each week starts for your pregnancy
The timeline is grouped by trimester with expandable sections, and if you are currently pregnant, your current week is automatically highlighted so you can quickly see where you are in your journey.
Frequently Asked Questions
What are the most important pregnancy milestones?
Key milestones include: first heartbeat detection (around week 6), first ultrasound (weeks 8-12), NT screening (weeks 11-14), anatomy scan (weeks 18-22), glucose tolerance test (weeks 24-28), Group B strep test (weeks 35-37), and your due date at week 40. Your provider may schedule additional tests based on your individual needs.
How accurate are the baby size comparisons?
Baby size comparisons to fruits and vegetables are approximate and meant to give you a general sense of your baby's growth. Actual measurements can vary significantly between pregnancies. Your healthcare provider will measure your baby's growth via ultrasound for accurate sizing.
When should I have my first prenatal appointment?
Most healthcare providers recommend scheduling your first prenatal appointment between weeks 8 and 12 of pregnancy. This visit typically includes a physical exam, blood work, and often your first ultrasound to confirm the pregnancy and estimate your due date.
What happens if my baby is measuring ahead or behind?
It's common for babies to measure slightly ahead or behind the average. A difference of a week or two is typically normal. Your healthcare provider will monitor growth over multiple visits. Significant discrepancies may warrant additional ultrasounds or testing, but often everything is perfectly fine.
Can I use this timeline if I don't know my exact LMP?
Yes - if you know your due date (from an ultrasound, for example), you can enter that instead of your LMP. The calculator will work backward to generate your full pregnancy timeline with accurate weekly dates.
Medical Disclaimer
This calculator is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for medical decisions regarding your pregnancy.