Pregnancy Weeks vs. Months
Pregnancy is typically tracked in weeks (40 weeks total), but friends and family often ask "how many months along are you?" Converting between the two isn't straightforward because months vary in length (28-31 days).
Trimester Breakdown
1st Trimester (Weeks 1-13): Months 1-3. Major organ development begins. Common symptoms include nausea, fatigue, and breast tenderness.
2nd Trimester (Weeks 14-27): Months 4-6. Often called the "golden trimester." Energy returns, and you'll start feeling baby movements (quickening) around weeks 18-22.
3rd Trimester (Weeks 28-40): Months 7-9. Baby gains weight rapidly. You may experience back pain, swelling, and Braxton-Hicks contractions as your body prepares for labor.
How This Calculator Works
Enter your current pregnancy week and any additional days. The calculator converts to approximate months (using 30.44 days per month average), identifies your trimester, and shows how many days remain until your due date at 40 weeks (280 days).