Off bc, don’t know when I ovulate. Ttc!!

Rachel

I got my nexplanon removed on aug 30th after 3 years. Me and my boyfriend are trying to conceive. I started feeling really sick and having symptoms about 2 weeks after removal and I took multiple test days apart and they’re all negative. 😩 I just started bleeding Thursday and have had a heavy flow. Lots of clots. I never had regular periods. Had a few random ones while on bc but that’s it. I have no idea when I ovulate. I’m stumped. 😩 help me!