I am a 27 year old woman. After having my daughter in 2008, my periods became slightly irregular (longer cycles). For the past year, I have been on a 34-day cycle. I have never had spotting before a period - neither unexplained spotting or implantation bleeding. This month, on the 26th day of my cycle, I had light pink spotting. It never really turned red, and became dark brown. I had the dark brown spotting for about 2 days, then very light brown discharge for another day. This stopped yesterday (day 30). My first thought was of implantation bleeding, but it lasted so long that I didn't think it could be that. I took a home pregnancy test yesterday and got questionable results. (Veeery faint positive, but from a brand that is notorious for false positives/evaporation lines.) My husband and I had sex last night and this afternoon, the brown/slightly red spotting returned. It is very light and is actually almost gone. I guess my question is, could this be implantation bleeding still? Or perhaps a "chemical" pregnancy? My period has never come like this - even on the rare occassion that it comes early, it begins very heavy and lasts 6-7 days and is accompanied by severe cramps. I have had no cramps with this spotting.