Hello, I am wondering if there is any possibility of me being pregnant. I was on the depo shot for 5 months, and my last shot was August 1st 2012. I quit taking it because of the miserable, almost constant, periods I had. After coming off the shot, I had a period that lasted for about 3 months, beginning in September with the last day of bleeding around December 24th 2012. I have had unprotected sex with my boyfriend several times, using condoms and occasionally just the withdrawal method. Lately, I have been extremely tired, more emotional, my breasts are sore, and my nipples are larger and darker. I have had mild cramping as well. Last week, on Sunday the 13th, my "period" began. The reason I added quotes was the bleeding started a week early, only lasted about 3 days, and it was lighter than usual. I bled lightly for a day, and the rest of the days was just brown spotting. Tomorrow is the day that my period is due. Could it be implantation bleeding? I'm wondering if I should take a home pregnancy test, or if the symptoms I'm experiencing is most likely just my body still getting back to normal. I've heard that some women take 1 year + to become fertile again after the shot. Thanks for any help!