Hi.. I had my first depo shot in november 2013 my periods had stopped but right after my 2nd depo shot in feb i started my period i was getting them monthly as usual as before well i was supposed to get my 3rd depo shot between april 29 and may 5 but i didnt get it until may 12 but i wasnt on my period i started like 3 days after and me and my fiancè had unprotected sex almost everyday thinking i wouldnt get pregnant and we had sex a few times while i was on my period TMI sorry but now im worried i havent had a period since june 2014 and im due for my 4th shot in august but i been feeling nauseated very tired im cramping and sometimes i get so nauseous i cant eat and now im wondering could i be pregnant ?