How many days before and after your period are you ovulating? Also how do you know if you can have children or not?

If you have a 28 day cycle you ovulate anywhere between 12 - 14 days after the first day of your last period.

This know for sure if you can have children or not you would have to be examined by a doctor, particularly a fertility specialist.

You normally ovulate 14 days before your period begins on a 28 day cycle, but it is possible to ovulate more than one in one month withoutn knowing, go to this site for more information:- Women can ovulate more than once a month - 09 July 2003 - New Scientist

Try to use this ovulation calendar tool Ovulation Calendar | Advanced Woman Calendar - pregnancy ovulation calendar by eOvulation to trace your cycle and find the date of ovulation.