Can you have sex while your on your period? Is it good bad what?

Yeah, sure. Good? Bad? You be the judge. If you can get past the mess and the odor (could be mild or even nonexistant, could be strong, or anything in between) it can be quite pleasurable for the woman. I don't much care for it, but whatever floats your boat.

Yes, you can, but for many women there are many physiological effects the will likely turn her off from having sex during her period (cramping, overly sensitive beasts or vagina, etc.). If she uses a tampon she's probably already a bit raw.

Like DeadlyCindy said, it depends on the girl.

If you're looking for really good sex, wait until after her period when she's ovulating (http://www.babycenter.com/refcap/preconception/gettingpregnant/484.html). At this point most women are naturally ready to have sex.

Just do it in the shower, no mess.

Shower sex is way over-rated.

I have the bruises to prove it.

^^Heh, agreed!

If you're going to do it, it's best to do it where you have easy bathroom access. And don't be in denial about the mess, just spread a towel under you and have some baby wipes and a roll of toilet paper (and a bag for trash) nearby.

Yeah, A friend said that her boy liked it better with a tampon in because of more friction or something, tighter area, but if its your first time, I advice againest it.

Uh, having sex while wearing a tampon would be dangerous, disgusting, and I can't even imagine it being physically possible.