i was on the depo provera shot for about 9 months and i stopped about 6 or 7 months ago. a little over 2 weeks ago i had unprotected sex and now my boobs are sore and i got some cramps and minor head aches, i felt nausea before i went to bed 2 nights ago. i don't think i am pregnant but i still wonder if there is a possibility that i could be. after i stopped taking the depo shot i never got a regular period so i cant really wait for a missed period but i got a very short period 2 days after sex, it seamed like a regular period no heavy and not light so I'm not sure if that would be consider pregnancy spotting or just some side effect from the shot.