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Due date calculator with your benefits timeline

Enter the first day of your last period, a conception date or an IVF transfer date. Get your due date and a dated list of what to apply for, and when, in your state.

Due date by ACOG's method · State benefits checked October 2026

  • An estimate: your care team may adjust it
  • Your dates stay in your browser

How it's counted

Your due date is 280 days (40 weeks) after the first day of your last period. After IVF, it's 261 days after a 5-day embryo transfer or 263 days after a 3-day transfer.

Find your due date and timeline

Your dates

Already had your baby?

After-birth deadlines count from this date instead of the due date.

Your dates stay in your browser. Nothing is saved or sent.

Example timeline

Your due date

May 8, 2027

Saturday, for a last period that started August 1, 2026.

Fill in the form to see your own dates. This one is a made-up example in Texas.

1st trimester2nd from Nov 7, 20263rd from Feb 13, 2027

  1. Now

    • As soon as you can

      Apply for pregnancy Medicaid if your income qualifies

      In Texas, Medicaid or CHIP covers pregnancy for household incomes up to 207% of the poverty level, and your unborn baby counts in your household. Texas uses presumptive eligibility: a qualified clinic or hospital can enroll you in temporary coverage while your application is processed.

      Texas pregnancy MedicaidCheck your income

    • As soon as you can

      Apply for WIC

      WIC is open to pregnant women under its income limit or already on Medicaid, SNAP or TANF, and each expected baby adds one person to your household size. In Texas, apply through Texas WIC.

      Apply: Texas WICWIC income limitsSource: USDA Food and Nutrition Administration

  2. Second trimesterfrom Nov 7, 2026

  3. Third trimesterfrom Feb 13, 2027

    • This trimester

      Line up your leave

      Texas has no state paid leave program; you're covered only if your employer buys a policy. Federal FMLA may give you up to 12 weeks of unpaid, job-protected leave.

      Paid leave by state

    • ByApr 8, 2027

      Tell your employer when your leave will start

      For FMLA leave, give at least 30 days' notice when the need is foreseeable, as a birth is. This date assumes your leave starts on your due date.

      Source: eCFR

  4. Birth

    • May 1, 2027

      Full term begins (39 weeks)

      Full term runs from 39 weeks 0 days through 40 weeks 6 days.

      Source: ACOG

    • May 8, 2027

      Your due date

      The day your pregnancy reaches 40 weeks 0 days.

      Source: ACOG

  5. After the birthfrom May 8, 2027, if born on the due date

    • ByJun 7, 2027

      Add your baby to your health plan

      Job-based plans must give you at least 30 days after the birth to enroll your baby, and coverage starts on the date of birth. Marketplace plans give you 60 days, until July 7, 2027.

      Source: eCFR

    • UntilNov 8, 2027

      Your own WIC eligibility after birth

      WIC covers moms for up to 6 months after pregnancy ends, or until your baby's first birthday (May 8, 2028) if you're breastfeeding.

      Source: USDA Food and Nutrition Administration

    • ByMay 7, 2028

      Use FMLA bonding leave

      FMLA leave for a birth has to be taken within 12 months of the birth.

      Source: eCFR

    • UntilMay 31, 2028

      Texas Medicaid for Pregnant Women postpartum coverage ends

      Texas covers you for 12 months after your pregnancy ends, through the end of that month. Before it ends, ask about other coverage.

      Postpartum Medicaid coverageSource: CMS

How the due date is calculated

Each starting date adds a fixed number of days, from ACOG's guidance on estimating the due date.

Days to the due dateExample: starting August 1, 2026
Start fromAddExample due date
First day of your last period280 days (40 weeks)May 8, 2027
Conception date266 days (38 weeks)Apr 24, 2027
IVF transfer, 5-day embryo261 daysApr 19, 2027
IVF transfer, 3-day embryo263 daysApr 21, 2027

Source: ACOG

Questions about due dates and deadlines

How is a due date calculated?

By convention it's 280 days (40 weeks) after the first day of your last menstrual period, a method often called Naegele's rule. It assumes a 28-day cycle with ovulation on day 14, so a conception date adds 266 days.

How do I calculate my due date after IVF?

ACOG says to use the embryo's age and the transfer date: 261 days after a 5-day embryo transfer, or 263 days after a 3-day embryo transfer.

How accurate is my due date?

It's an estimate. ACOG says an ultrasound in the first trimester (through 13 weeks 6 days) is the most accurate way to set or confirm the due date, accurate to within 5 to 7 days, so your care team may change the date this calculator gives you.

When does each trimester start?

ACOG counts the second trimester from 14 weeks 0 days and the third from 28 weeks 0 days. Full term runs from 39 weeks 0 days through 40 weeks 6 days.

When should I apply for pregnancy Medicaid and WIC?

You can apply for both as soon as you know you're pregnant. Both count your unborn baby in your household size, which raises the income limit you're measured against.

How long do I have to add my baby to my health insurance?

Job-based plans must give you at least 30 days after the birth to enroll your baby, and coverage starts on the date of birth. In a Marketplace plan you have 60 days.

Sources

  1. 1.Methods for Estimating the Due Date, Committee Opinion No. 700 (reaffirmed 2025) ACOG. Accessed October 9, 2026.
  2. 2.How Your Fetus Grows During Pregnancy (FAQ156) ACOG. Accessed October 9, 2026.
  3. 3.Definition of Term Pregnancy, Committee Opinion No. 579 (reaffirmed 2025) ACOG. Accessed October 9, 2026.
  4. 4.WIC Eligibility Requirements USDA Food and Nutrition Administration. Accessed October 9, 2026.
  5. 5.Medicaid and CHIP Income Eligibility Limits for Pregnant Women as a Percent of the Federal Poverty Level (as of January 2026) KFF State Health Facts. Accessed October 9, 2026.
  6. 6.Medicaid Postpartum Coverage Extension Tracker (as of July 15, 2026) KFF. Accessed October 9, 2026.
  7. 7.42 CFR 435.603(b), definition of family size eCFR (National Archives). Accessed October 9, 2026.
  8. 8.SHO #21-007, Improving Maternal Health and Extending Postpartum Coverage in Medicaid and CHIP CMS. Accessed October 9, 2026.
  9. 9.42 CFR 435.170, Pregnant women: extended and continuous eligibility eCFR. Accessed October 9, 2026.
  10. 10.Breastfeeding benefits HealthCare.gov. Accessed October 9, 2026.
  11. 11.29 CFR 825.302, Employee notice requirements for foreseeable FMLA leave eCFR. Accessed October 9, 2026.
  12. 12.29 CFR 825.120, Leave for pregnancy or birth eCFR. Accessed October 9, 2026.
  13. 13.29 CFR 2590.701-6, Special enrollment periods eCFR. Accessed October 9, 2026.
  14. 14.Special Enrollment Period HealthCare.gov. Accessed October 9, 2026.

Benefits on your timeline

Pregnant woman handing a folder of documents to a caseworker across his desk at a benefits officePregnancy Medicaid by stateIncome limits for every state, counting your unborn baby.Mother holding a plain benefits card while choosing apples in a grocery produce aisle, her toddler in the cart seatWIC income guidelinesThe 2026 to 2027 limits by household size and pay period.Father working at a laptop by a window with his newborn asleep on his chest in a wrap carrierPaid family leave by stateWhich states pay for leave after a birth, and how much.Doula kneeling beside a pregnant woman who leans on a birth ball at home, a hand on her lower backFind a doulaDoulas near you, including those on state Medicaid lists.