My husband knows the best way to get me hot is by eating me out. He goes down on me religiously. Just recently I stopped him due to my period but he insisted on eating me out anyways, and he did. Do other men do this? Have you?

Of course. I knew girls and women who were extremely insisting that I just had to do it as often in behalf of their period.
I was told that they sometimes have cramps during their period and getting licked gives to them a real relief of their cramps in their belly.
In ancient Rome and during medieval times physicians were recommending to noble ladies to use a young slave for that.

In my experience most men are willing to do this and many really enjoy it. Let's not fear making "messes" when it is natural for us to do so. At least in the privacy of our own homes.

My bf would NEVER go down on my while I was on my period

i have ... its usually not as vigorous as other times ... but hey, it's the least i could do ;)

i have sucked a lot of pussy were the women was having her period i belonged to a motorcycle club that if you ate out a black women with her period you got your black wings and if you ate out a white women with her period you got your white wings an asian women you would get yellow wings and so on i have wings from every race.

Yes I do at least if she is comfortable with it, though usually I lick just the lips, and clit and depending on flow, she can wear a tampon as well and that reduces the mess.
I have a friend that knows how much I like to lick pussy, and she enjoys me licking her as much, so she will just tell me, so I know... it is very exciting for us both.

Yes, I have. Period sex is nothing short of wonderful.