Hello,
Birth control pills and depo shots do not cause
infertility. Periods may be delayed after
depo shots because if you stop getting
Depo-
Provera injections, your period usually returns within 3 to 10 months but sometimes it may take 12-18 mths.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps.