If you haven't already, DO IT. It's the greatest time to have sex. Your body is so hormonally in tune during your period that you will have some of the most intense orgasms.(it also helps that the blood makes things all slippery and stuff, which can also be accomplished with golden showers) As for the eating out on the rag, well, wouldn't do it, but if that's what turns yer crank, let er rip.