periods.day
Did I get her pregnant?
Start with dates she shares
Understand the timing together, using dates she chooses to share. An estimate cannot tell you whether pregnancy happened.
Ask for her period dates, or open a cycle link she sent. Do not guess or track her cycle without her agreement.
Period days logged
0 days
Estimated cycle length
28 days
Typical period length
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With her agreement, log bleeding days. Hover or hold the date of sex for its estimate.
01
Use only period dates she agrees to share. Enter bleeding days, not the day you had sex.
02
Hover or hold the date of sex to see its estimated phase. A lower-fertility label is not an all-clear; the summary shows today.
03
Help arrange advice or a test if she wants. Test from a missed period, or at least 21 days after the most recent unprotected sex if the due date is unknown.
periods.day has no accounts, cookies, analytics, or saved cycle data. Your entries live only in the link.
Anyone with the full link can see your entries. Share the link only with people you trust.
I was tired of having something as simple as tracking my cycle used to target me with ads for period underwear, fast food, or makeup. I wanted to understand my body and what it needs without advertisers exploiting that information. That’s why I built this site.
No. Even accurate period dates do not establish the exact day of ovulation or whether pregnancy occurred. A calendar offers context; a pregnancy test at the right time is needed.
Withdrawal can fail and does not rule out pregnancy. If pregnancy is not wanted, seek prompt advice about emergency contraception instead of relying on cycle timing.
Ask what support she wants, listen, and offer practical help getting advice or a test. Use and share cycle information only with her agreement. Healthcare decisions about her body are hers.