I ONLY GOT THE DEPO shot one time wich means i had it for 3 months i was suppose to go get the next one on june 16 but i decided not to because of all the side affect while i was on the shot surprisingly i did have my regular period each month . i get my period every 21 and today is the 22 and still nothing i have been having unprotected sex ever sense .... i was wondering if it is possible to be pregnant in that short amount of time?