Ovulating? PLEASE RESPOND

Hi guys I need help :( I have such irregular periods and I can never tell when I'm going to ovulate. I'll be active on the week that glow shows but then when I actually get my period and I log it it changes :( I have no way of being able to tell and it's making me super sad.
My question is, is there any other ways I can tell when I'm ovulating?? I wanna be pregnant :( Please help