Pink to brown Spotting 4 days, missing period
I am seventeen years old. I am on birth control pills. My cycle is very regular (because of the pill and naturally). My last normal period was on 8/14/09. This month my period was suppose to come on Friday, it is now Monday. I have only had pink spotting(starting friday) and brown spotting today (monday). It is a few drops of blood at a time hours in between. I took a urine test today and it came out negative. What is going on with me? Any advice or opinions?