 [ Symptoms ] i am a guy and i get ingrown hairs on my face from shaving no matter what i do i can not get rid of the bumps help [ Disease ] hi one it would depend how long you have been on the shots and yes he is right it does take sometime for it to clear your body as for being pregnant after 4 weeks you could be the odd one who is on the outside chance of getting pregnant so quick in some women it can take up to 18 months to get pregnant but one thing have had a period yet i do not think its until you get your regular periods back that you could think of getting pregnant but google getting pregnant after depo shot your find some good info do hope this helps good luck