I've been on the depo shot for 8 months my next shot is next month... At my last doctors appt they did the pregnancy test and It was negative . But that was also almost 3 months ago. I've been on my menstrual cycle for two and a half weeks straight. The cramps weren't bad but they were there. Today I was in pain for 30 minutes finally got up and went to use the bathroom I peed and when I wiped a big thing of bloody goo with grey in it was on the toilet paper and ever since then I've been in worse Lowe pain and lower back pain.... Was that a miscarriage ??? Help...