Fertility awareness newby

So I have tried at least 4 different birth control methods, combo pill, shot, a different pill, and then the nuvaring. All of which I had some pretty bad symptoms. I admit that I’m not the best with the pill simply because they make me gag, every single time. But when I would miss a single one, I would bleed profusely, so bad I had to go to the emergency room. All the others I either had extreme discharge or a loss of sex drive almost completely. So now I have been off of bc for about 2 months, my boyfriend and I are sexually active but have been careful, but now I want to understand my body more, understand my fertility and know what’s going on, I recently got a basal thermometer and have been checking my cm and cervix height and texture but I was just wondering if anyone had any advice or something to help a girl out ya know, I’ve literally only started this like 2 days ago so I’m very very new, thanks! 💛