How common is it for girls/women to have unprotected sex during their periods?

I'm curious. Wondering if others have unprotected sex during the period. I would love to hear your comment.

Thanks.How common is it for girls/women to have unprotected sex during their periods?Personally - I don't have sex at all while on my period. It would be a...mess!How common is it for girls/women to have unprotected sex during their periods?I have unprotected sex all the time but im on the pill and he pulls out. Usually during my period he uses a rubber unless it is light.How common is it for girls/women to have unprotected sex during their periods?Sex yes, but unprotected no, it's probably not very hygenicHow common is it for girls/women to have unprotected sex during their periods?
I don't have sex during my period, actually its against my religion to do so. Also having sex on your period will makes the body catch diseases faster because its ready for it. That is proved by Scientist.