I got my period a few days ago, but it has been different than usual. I usually get long, heavy periods that last for about a week, but occasionally a very light one that lasts about 3 days. This time, the blood is not it's normal red color and flowing, but instead a very dark red (sometimes brownish looking) and clumpy. There has been very little "actual" blood this time. It has all been clumpy and strange colored. When I say actual blood, I just mean the normal type of blood I think of when I'm on my period, or even when you get a cut or something. I lost my virginity a few weeks ago, if that might have something to do with it. I am not on the pill, but we used a condom.

Can anyone please tell me what might be going on?