Hormone Specialist for Women in Menlo Park, CA

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90-Day Preconception Planner

An egg takes about three months to mature before ovulation, and sperm take about the same, so the three months before trying matter for both partners. Choose the date you plan to start trying and get a dated checklist, a printable plan and calendar reminders.

Plan My 90 Days

Reviewed October 24, 2026 · Free to use · Your dates stay on this device

Dr. Samia McCully, ND in conversation with a patient at her desk
  • 90 daysof dated steps
  • 400 mcgfolic acid, at least 1 month ahead (CDC)
  • Bothpartners included
  • .icscalendar reminders

Your dates and ticks stay on this device. Nothing is sent to Wellness Architecture or anyone else.

When Do You Plan to Start Trying?

Pick a date about three months away for the full plan.

The 90-Day Checklist

Tick steps off as you go. Build your plan above to see a date beside each stage.

About 90 days before

About 60 days before

At least 30 days before

Common Questions

Why 90 days?

The final stage of egg development before ovulation takes roughly three months, and making sperm takes about 64 to 74 days. Changes in nutrition, smoking, alcohol and some medications during that time shape the eggs and sperm used at conception.

When should I start folic acid?

The CDC advises 400 micrograms of folic acid every day for at least one month before pregnancy and throughout early pregnancy, to lower the risk of neural tube defects. Some women need a higher dose, such as those with a previous affected pregnancy; a clinician sets that dose.

How long should we try before seeing a doctor?

The American Society for Reproductive Medicine advises an evaluation after 12 months of trying for women under 35, after 6 months at 35 to 39, and right away at 40 or older or with irregular periods or known conditions.

Does the plan include my partner?

Yes. Sperm health responds to the same 90-day window, so the checklist includes steps for both partners, such as stopping smoking and reviewing medications.

Sources and How This Tool Works

Steps follow CDC preconception health guidance, including folic acid timing and vaccine checks, ACOG's guidance on prepregnancy counseling, FDA and EPA advice on fish, and ASRM guidance on when to seek a fertility evaluation. Dates count back from the day you choose. The calendar file is created in your browser and downloaded straight to your device.

General health information, reviewed October 24, 2026. This tool informs; it does not diagnose, treat or replace care from a licensed clinician, and the linked sources' current versions control. Severe pelvic pain, heavy bleeding or a positive pregnancy test with one-sided pain needs urgent care. If something feels urgent, call 911 or your doctor.

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