i have a cousin that was in the same situation than you , She told me that the doc told her that the shot just made her sistem more slow they were going to give her hormones but all of a sudden without expecting it she came out preg.. :D
We have been trying for a year and 9 months. And no I havent had a check up
How long have you two been trying? Have you had a check-up? Talked to a gynecologist about things?
I'd also recommend not having sex every day if you are as it is counterproductive toward trying to get pregnant.