irregular periods

Hi everyone - does anyone else have irregular periods? Mine range sometimes 21, 24, 27 - it's different almost every month. We are trying to get pregnant - no good this month. How do I know if I'm ovulating if my cycle is different every month? Any advice??

Try using OPKs (ovulation prediction kits). You start testing on like 10-11 after the first day of your cycle. The first day is the day you get your monthly. Spotting does not count. Usually if you get a +opk then you are ovulating.
You should also talk to your docotr about getting you hormones tested. By taking blood a few times throughout the month they can usually tell if you ovulate or not. Good luck.