Okay so I got my first depo shot July 16th, so I've been on it a little over a month now. I haven't had my period since getting it but I've been cramping for over a week now. It's like 2 weeks late. Now I have a kind of brownish discharge but still no blood. I thought that came at the end of your period? We don't use condoms anymore but he usually pulls out. Also, the discharge is kinda stretchy too. So I can't be pregnant, can I? Or what's wrong?