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How long is my cycle?
Hi all. I just wanted some help in calculating the length of my menstrual cycle. I know that day 1 is the first day, but is the last day of your cycle:
a) The day BEFORE you get your next period
or
b) The first day of your NEXT period?
My periods are always exactly 4 weeks apart, meaning that they always start on the same day of the week (a Saturday). My last period was on 21 September, and my next is due on 19 October, exactly 4 weeks. So how long do I say my cycle is? 28 days or 29 days?
2 Answers
- Anonymous8 years agoFavorite Answer
28 days. Day 1 is the day your period starts, the last day is the day before your next period starts.