I was due for my last shot on the 15th of June, however decided not to get it as it was causing my body more harm then good, I am still yet to get my period however am feeling lots of strange symptoms, enlarged breasts, constantly hard nipples, stomach cramps, I first had unprotected sex with my partner on 10/08. It is now 20/08 and have even having these symptoms for a couple of days now, surely it's not possiby to be pregnant and how symptoms within a week??