i want to be pregnant

i’ve currently been off of the birth control shot since october and me and my boyfriend have unprotected sex ALLL the time at least 3 times a day he always cums inside me.. why am i not gettin pregnant?

note: my periods are very weird i’ve been bleeding for about a 2-3 months straight now sometimes it’s very heavy or barley nothing at all, but i haven’t stopped at all. should i go to the doctor??