Instantly identify your current trimester, pregnancy week, and days remaining in each phase of your pregnancy journey.
1st: Weeks 1–13 | 2nd: Weeks 14–27 | 3rd: Weeks 28–40
Pregnancy is divided into three trimesters of approximately 13 weeks each, with distinct developmental milestones, common symptoms, and prenatal screening tests in each phase.
The most critical period for fetal development — all major organs and body systems form. The embryo is most vulnerable to toxins and nutritional deficiencies. Key screenings: 8–12 week ultrasound, first-trimester NIPT/nuchal translucency screening.
The "golden trimester" — nausea typically fades, energy returns, and the baby bump becomes visible. Baby begins moving around weeks 18–22. Key screenings: anatomy ultrasound (18–22 weeks), glucose tolerance test (24–28 weeks).
Baby gains most of its weight here, growing from ~2.5 lbs to ~7.5 lbs. Common symptoms: Braxton Hicks, back pain, heartburn, frequent urination. Key milestones: Group B Strep test (35–37 weeks), weekly OB visits from week 36.
Medical Disclaimer: This tool is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalized guidance.