Hi. My last period was on July 2nd and I had sex durning my ovulation. I was suppose to start my period yesterday {July 29th} and today when I got up I noticed a small amount of brownish blood on my panties. Then around the end of the day it turned kind of red, and there was more of it. But now there is nothing. I am having light pains in my belly, but nothing like a period. I didn't have any implantation bleeding with my first pregnancy, so I was wondering if this is implantation bleeding or just my period coming? My breast are also tender and I am very dizzy, and I have had a headache for a couple of days. I would love any information...

Implantation bleeding is not as common as most people believe it to be.

While it is possible, I would tend to believe that you may just be starting your period for this month.