I decided to take the shot for safety since I dont want to get pregnant. I just got my shot july 21. I finished my period july 20 and got the shot on the 21st I was wondering if after a week like this next thursday (july29) can he come inside me or should i wait till july 30 to be effective? Cause were going out of town and i know something's gonna happen. Can you please explain the depo for me?