I am near my periods this month, and I got some blood on the Underwear today morning I put on a tampon and after 4 hrs, it has mild bleeding. Then I changed to a pad, and now after another 4 hours there is absolutely no blood on the pad. I thought I got my periods but this doesn't seem like it. What could it be?? The blood was red. I have not had any sexual encounter in the past month. Last I had sex was 14th Sept. I did a preg test at home on 7th Nov which was negative. What could be the reason for this ??? Who should I consult