Pregnancy Info HOME

I know this might sound wierd and confusing but I am a 32 day cycle and got my period Aug 1 08 then from my cycle calculator I was supopose to be ovulating on the 19th of Aug not knowing this me and my husband had intercourse this day so to make a long story short I was suppose to be getting my period on the 2nd of Sept and to my surprise I got it on the 30th of Aug only 11 days after my ovulation day and 3 days before my period was due. Also after that on the day I was expecting my period the 2nd of sept I started having just very light brown not enough to put a pad on I would only see it when I would wipe after going to the bathroom. My period of the 30th of Aug was very pink at first then very dark dark red and the in went into a brown blood and it lasted only 3 day I usually get very bad cramps and have to keep my self medicated straight through but this time I only had just slight cramps drank some midol and was good the rest of the time Could this have been implantation bleeding or was it just a regular period I am really confused. I took a pregnancy test but it gave a negative result what should I do????? HELP!!!