I have always had a normal consistent on time... well on may 2nd I got the depvo shot for the first time ( iwas suppose to be on day 5 of my period but ends up I didn't bleed at all that day) ever since then I have not had a period. Around the 20th of June when I went to restroom and I wiped I noticed dried out brown/red blood. This kept occurring every now and then since that time (so about 5 weeks) I haven't had any other kind of discharge. Since this started I also experience some pain after intercourse as well as pain when I lay on my stomach and some discomfort in lower back. My stool also changed some times its hard and very dark brown almost black in appearance and other times it's a brown/orange color but mucas like. I got the shot because me and my ex (who was fixed) were breaking up and I wanted to be safe in case I had met someone new... I ended up with my best friend once time unprotected that was may 16th. Since then my ex and I have decided to work things out but he is fixed... so... what could be causing this