I was on depo for a year but decided to come off it as it made me gain Lbs. I was due for my next shot on Aug 30th 09 but didnt get it, I have not got my period since i frist went on it a year ago and still havent got it and its now november 3rd 09 so its been about 2 months since getting off it and not to mention have had unprotected sex all test say im not pregnant the last time i had unprotected sex was september 30th and have not taken another test. Could I be pregnant even though i havent got my period, oh and also my breast are sore and leak when squeezed and I woke up this morning feeling nausious. What could all this mean?