I haven't had a period for 3 months, I recently done 2 home pregnancy tests and both came back negative. Me and my partner are trying for a baby but because I haven't had a period for so long, I can't remember the date of the last one I had was. Therefor I don't know when I'm ovulating. Me and my partner both really want a baby but are struggling to catch because I don't know when I'm ovulating. Please help!

There are lots of reasons you don't have a period. I would suggest going to your reglar OBGYN and have some testing done on your hormones. They could be out of whack and need a slight adjustment.