Hi... I started the depo shot in January 2011 and I only had 3 shots total, one shot in may and another in August. Recently my period just started back because I started taking birth control pills. I stop taken them because I wanted my period to come back and when it did come back, it would come on every other month but now my period was suppose to come on July 12 and it didn't come on. I went to the doctor July 11th for a pap smear and a pregnancy test. So my question is is there a way I could be pregnant even though I haven't had any symptoms excepts for random head aches and dizziness. Also me and my boyfriend have been trying to have a child for a couple of months now and I fear that I could be sterile do to the fact that I've been on 2 different birth controls and I didn't use them the way they were suppose to be use also is there any medicine I can take to help me get pregnant. Is it possible that I could be sterile?