I stopped depo shot in february. had my march and april periods but now my periods have not started/are late. pregnancy test came back negative, is this normal? will they eventually come?

Depends: Menstrual cycle normally returns to baseline a after Depo Provera is discontinued. Normal is relative, if your period was irregular prior to initiating Depo, then it likely will be irregular after you stop (return to your base line). If your period was regular then it should return to your normal regular cycle. If pregnancy is ruled out then there is no need to worry.