I have been on the shot for a year and a half. Got my last shot September 25th. I finally got my period back March 4th. I had unprotected sex twice March 18th. Since a couple weeks ago I have had hot flashes. Friday I got cramps like I was going to get my period but then nothing and they went away. Then Saturday all day I have had period like cramps but when I look all I have is white discharge. My period was due Sunday. I don't have any other symptoms other then my nipples are sore sometimes. I took a test Sunday night and it was negative then Tuesday morning and negative. Could I be pregnant or is it just the shot? I don't know what to do and don't have a doctor.