Received 1 and only depo-provera shot in feb. haven't had a period since april 10th. is it possible that i am ovulating even though i haven't had a period?

Yes. : Yes, Depoprovera only remains active for three months, so you are no longer protected against pregnancy.

Possibly: It is possible that you are ovulating so even though you are not menstruating, assume that you could get pregnant. Irregular menses is a common side effect of the Depo-Provera shot and can last many months after the last Depo-Provera shot. IF you had irregular menses before the Depo-Provera shot, you are even more at risk for irregular menses after the Depo-Provera shot.