I had surgery about two weeks ago, which was when my period was supposed to start. I've been really good about having sex with condoms and I use the Depo shot for birth control too. So, basically I do my best to cover all my bases, but my period is quite a bit late. I know that can happen as a side effect of the shot, but I am really paranoid about getting pregnant. With how much I do to prevent pregnancy, is it worth me getting a pregnancy test for just in case?