hey, i trying to find that out too because i had my very first period a while ago and it only lasted one day.... i guess it's normal but i dont know...
Estimated due dates and pregnancy time lines are calculated from the very first day of your last menstrual period.
The first day of your period, with or without the pill, is the first day of bleeding.
You can get pregnant any time you have sex regardless of when your period was. To find the most likely time when you will get pregnant count back 14 days from the first day of your last period. One month from that day is the most likely time to get pregnant.
The first day of a womans menstrual period is just that - the first day of menstruation.
Neither, about a week after your period ends is normal.
It's the first day of your last menstrual period.
Estimated due dates and pregnancy time lines are calculated from the first day of your last period.
yeah It is determined by the day of your last menstrual cycle began.
Count from the 1st day of your "Actual" Period From the first day of your last period until your next period, depending on how long your cycle length is. (for example, if your cycle length is 28 days, then the time you start to ovulate is around day 14. but every woman is different). For example, if ur period starts on June 1, then that's Day 1 of ur cycle. The first day of your period is the first day of bleeding, which is the first day of your cycle.
I think you go by when the sperm unites with the egg
last
Most doctors revert back to the first day of your last period.