I have missed my Depo-Provera injection for seventeen days. I was put on Depo for ovarian cyst I form around the time I ovulate. ( I've been on it for three years.) When it wouls be close to my next injection, I could sometimes feel the cyst pop. I haven't gotten that yet and I haven't even spotted. (witch I do often.) I am sexual active. Do I have to wait to get my period until I am able to get my shot? Could I be pregnant? My birth control office is closed, along with my regular doctor. Up until now I was working for a week in Chicago. So, I couldn't get it and I din't realize it until I had left. Will someone please help me out here?