TMI!!!!

Soooo hear goes the long story;

I been on Depo Provera birth control for 8 years now but have been on and off ever since 2015. I'm planning on switching birth control, maybe to the pill but anyways on March 19th I started bleeding but also could call it spotting as it was small amount same as the pictures amount. And my shot isn't due until April 19th so I have never spotted this much a month before my shot is due. Ben having cramps way before the bleeding started as well as mood swings emotional, angry all those things. As well as cravings and all the weird female things before I started bleeding on March 19th. Today on March 21st in the morning I had brown slimy discharge, could be old blood but seems weird since it was pinkish and red the past 2 days. also been having unprotected sex with my fiancee days and weeks before the 19th and as well as that week. I did have clear slimy discharge a week or two before all this but didn't pay mind. So could possibly be pregnancy but this form of birth control is very strong as I've been on it and had two miscarriages while being off the shot for 6 months. But I know everything is a possibility so if anyone thinks it's pregnancy or if anyone can give me advice on what they think it is or what's going on any advice will help me. ( I have no smell or itch or burning so no infections I'm sure of. ) Thank you and sorry for TMI!