I was on the depo for about 2 1/2 to 3 years and I got my last shot back in november last year. I didn't have a single period while on it but I did spot brown occasionally. Now that im off of it I have started bleeding again. But it wont stop. It might slow down or change from brown to red. It had recently had stopped to the point that it was back to brown spotting. So I had sex after 24 hours of not bleeding and right after it started bleeding again and hasn't stopped. What in the heck is wrong with my body?