Hi, I had recently two weeks ago on January 13 had gotten a first time depo shot. I had this shot before but, a long time ago, they took me off and when I asked for a birth control they put me back on. That was almost a year ago. I was told to wait two weeks to get in full effect before I have unprotected sex, I ended up having sex on January 27, yesterday. I want to know by any chance at all am I protected or do I need to take a pregnancy test!