I am really trying to have a baby but my periods are not regular at all how do i know when im ovulating and how do i know if I'm even fertile?

I would advise you to keep focusing on your cycle and how long it is and mark down the first day of your period too. You can go to the pharmacy and purchase an ovulation kit or maybe this site might help you: www.yourdays.com Create an account for free, and then go to getting started on the left side...from there just enter in the first day of your last period, how many days your cycle is and the luteal phase # 14 and then you'll have your own calendar to help you pinpoint when you re ovulating. Hopefully this helps you out some.