Hey,
My husband and I have successfully had anal sex recently. We tried it a few times years ago, and I had the same extreme pain that you all are talking about, so I simply avoided it. Don't worry the pain your feeling will go away soon. However this was something my husband really wanted to try so we did it again. We were both really relaxed and took things VERY slow. We used lots of lube, he inserted his finger into my anus a few times, then I strattled him and it went in pretty easily. We both really enjoyed it and he now have anal sex a few times a month.
If this is something you eventually want to try again you may want to try different positions till you find one that is comfortable.
Yes, it's an indescribable pain.
Among the worst pain that I've ever felt in my life... in fact, it was so bad, I thought
that I was going to pass out! So, that's why I avoid it.
It takes a while but that pain does go away.
However, in the future, do yourself a favor and discuss sexual preferences and parameters with your partners prior to engaging in sexual activity... say no to anal sex.
If you feel very relaxed with your OB/GYN call and ask them. Tell them what you're experiening. That's what I would do. A girlfriend of mine really loves it when her and her husband do it that way.
it will go away with time. you might have damaged the anal opening