Dr. Patsama Vichinsartvichai
MD, MClinEmbryol, EFOG-EBCOG, EFRM-ESHRE/EBCOG, FACOG
A common question from couples planning conception: "What position increases chances of pregnancy?" Short answer: position doesn't matter as much as timing.
Scientific Reality
- Sperm reach the fallopian tubes within 15–30 minutes of ejaculation
- The cervix sits lower than the tubes in any position — sperm swim against gravity naturally
- No research supports one position over another
- Standard positions (missionary) are sufficient; others work too
What Actually Helps
1. Timing — Catching the Fertile Window
Highest chance is 5 days before ovulation + ovulation day (6-day window). Have intercourse every 1–2 days during this window. Use our ovulation calculator.
2. Optimal Frequency
Don't abstain to "save up" sperm — every 2–3 days throughout the cycle keeps sperm fresh and quality high. Abstaining more than 5 days reduces motility.
3. After Intercourse
- No need to elevate hips — research shows no benefit
- No need to delay urinating — sperm are already in the uterus
- Resume normal activity
What to Avoid
- Chemical lubricants — use Pre-Seed or natural options if needed
- Hot baths, hot tubs
- Chronic stress
- Smoking, excessive alcohol
When to See a Doctor
- Age < 35 and trying for 12 months
- Age 35+ and trying for 6 months
- Age > 40 — see a doctor as soon as trying to conceive
- Irregular periods
- History of recurrent miscarriage