Hello. My first time getting on the depo shot was the beginning of October , I was suppose to get my 2nd shot December 31st. I am trying to get off depo. I had unprotected sex 3-4 times & my boyfriend came in me the times we had sex, it is now Jan 21st and I've been experiencing brownish blood or discharge . Sometimes dark brown . After sex I'd see blood and then after I will be spotting brown again . Then a week later i'd experience pinkish reddish blood or discharge that looks tinged. And the very next day there is nothing. My blood sometimes looks a bit bright or looks as if it's a dark orange color as well. Sometimes my boobs are sore and then their not. I use to experience lower back pain and lower abdomen pain I'm just wondering what could possibly be going on.