If your last period was November 27 when were you fertile?

To calculate your fertile window, you need to know the length of your menstrual cycle. A menstrual cycle is counted from the first day of one period to the first day of the next period. The average menstrual cycle is 28 days, but it can vary from 21 to 35 days.

If your menstrual cycle is 28 days, you would ovulate (release an egg from your ovary) on day 14 of your cycle. This means that you would be fertile from day 10 to day 16 of your cycle (the 5 days leading up to ovulation and the day of ovulation itself).

If your menstrual cycle is longer or shorter than 28 days, you can calculate your fertile window by subtracting 18 days from the length of your cycle. For example, if your menstrual cycle is 35 days, you would subtract 18 days to get 17. This means that you would be fertile from day 10 to day 27 of your cycle.

It is important to note that these are just general guidelines and your fertile window may vary from month to month. If you are trying to conceive, it is important to track your menstrual cycle and identify your fertile window so that you can time intercourse accordingly.