Day #1 is the last day of your period, then count to the first day of your next period. No, Day #1 is the FIRST day of your period, then count the days to the first day of your next period.
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pregnancy tests will only detectafter 5 days of your missed period
Yes. From the first day of the last period you had - count forward 28 days (or when you expected to start). Day 29 would be 1 day late.
1,825 days. Just multiply 365 (the number of days in a year) and 5. That's wrong. You have to count with the leap years. When calculating days in a period of several years you have to count one year as 365.25 days. Exactly! So the answer is actually 1825.25
When you start your period if you have brown, old blood first you count those days as the first day of your 28 day menstrual cycle. You do not have to start counting day one when the blood is red.
Any counting of days regarding menstruation or fertility is always from the first day of your period - LMP is the day you started your last period, fertility window is from LMP - to days 9 thru 16 - the average cycle is 28 to 34 days beginning with LMP.