When can I get pregnant?

Hello everyone I was wondering when could I get pregnant. I’ve been on birth control since 2018 I first got the depo provera shot and than I got the implant but I got it removed because I kept bleeding for several months and got anemia. And I started getting the depo provera shot again for a few months. Later on I got off the shot for three months and from there I’ve had the shot two more times. I had an appointment in aug. 10 but decided to stop taking birth control because I’m scared to have infertility problems later on.