Hello, Im 20 years old and about a year and a half ago I got the depo shot ONCE and never took it again. Ever since then I haven't had a period and its been over a year now. 3weeks ago I had unprotected sex, about 2 weeks after that I began to have weird symptoms such as tender breast, backache, increase in apetite, bloating and thought I might be pregnant. So yesterday I went to a crisis pregnancy center and took a pregnancy test which came back negative. Last night I had sex (girl on girl) she "fingered" me and I started to bleed and the bleeding hasn't stopped yet, and thi happened last night. I don't feel very good but I haven't been naeaus. This is a strange situation and my body is confuing. I have no idea if I'm pregnant, starting my period or whatever the case may be. Can someone please help!!