I don't mind it, my partner is squeemish though and doesn't like the sight of blood. We wind up having shower sex or no sex during my period because of this. I wouldn't mind having more sex during my period, but sense it bothers him so much we just don't.
period sex doesn't really bother either of us. For the most-part we dont have sex during that time, just to avoid the clean-up, I hate trying to get blood out of fabrics. We tried the shower thing, but our shower is simply too small for us both to be in at the same time.
He is all for it, but I don't really like it that much. Aside from having a pretty heavy period, the debilitating cramps and being super sore doesn't help get me in the mood. Blood doesn't make a very good lubricant.
Ive done it before, I must admit, (before depo) when I had my period i was always super horny... It was good. I would take a shower right before we did it tho, and placed a towel under me just in case. But I havent had a period for almost 4 years.