Need help tracking ovulation..I'm ready for a baby! Help!


I am suppose to start my period, between the 11-13 which last 3-5 days but I came on July 2-3 which started out light. It's the 9th of July and I'm bleeding heavier and there's also clots. I've been trying to get pregnant but not sure what's going on with my body sense my period is irregular. When is the best time to have sex? I'm lost