It is now November 21, my boyfriend has finished in me 3-5 times since getting the shot. (We haven't been using condoms since after the first week of getting the shot) I was supposed to have my period on the 18 but I haven't yet. Is that because of the Depo? Is there any chance of pregnancy? Is it safe for my boyfriend to finish in me? Should I be worried? Any answer/advice would be greatly appreciated. Thank you in advance.