I recently thought I was pregnancy and I have some symptoms like nausea and feeling bloated and I took a test and it was negative. So I decided I was going to wait another week to take one, I had very light spotting and after a day and a half it went away, then my boyfriend and I went to have sex a couple days later and I started bleeding a lot, there was no cramps or anything associated with it, and after I cleaned up I wasn't bleeding at all anymore, then this morning I noticed brownish gray discharge, it's very very little and it's only there when I wipe.. I have no clue what's going on. This has been happening on and off for 22 days and I haven't had a period since March, Help?