You cannot remember the last day of your period How can you figure it out so that know whether are late?

If you cannot remember the last day of your period, there are a few ways you can try to figure it out so that you know whether you are late:

1. Use a period tracking app or calendar. If you have been using a period tracking app or calendar, you can check your records to see when your last period started and how long it lasted.

2. Calculate the average length of your cycle. If you know the average length of your cycle, you can count back from the day you are expecting your period to arrive to estimate the last day of your last period.

3. Take a pregnancy test. If you think you may be late for your period, it's a good idea to take a pregnancy test. If you are not pregnant, your period should start within the next few days.

4. If your period is always irregular, count 21 days. That's about the average length of a luteal phase, the time between ovulation and your next period. Then subtract 21 from the day you're testing; that's the first day of your most recent period.

5. Check your cervical mucus. If you are not sure when your last period started, you can check your cervical mucus to get an idea of where you are in your cycle. If your cervical mucus is clear and stretchy, you may be ovulating or about to ovulate. If your cervical mucus is thick and cloudy, you may be in the luteal phase of your cycle.

If you are still not sure when your last period started, it is a good idea to talk to your doctor. Your doctor can help you calculate your cycle length and determine when your period is due.