Anal questions?

well I haven't had anal for a long time but my Mr has been wanting to. I had given him permission already about 2 months ago and I thought well it's his first time actually doing anal on a girl. finally he tried on monday and it didnt hurt like the first time I did it, it even felt really great! but when it all ended my ass hurt. I was scared to pop because the first time I bleed but this time I didnt. which made me happy but this is what happened this time. I'm very gassy after that and I had diarrhea. I was wondering if anyone else had this problem? because I also didnt eat for a week no time but that day I ate alot. what do you think about anal? anything suggestions to enjoy more, have more fun and do you think that I told my Mr. that I decide when hes allowed to put it in my booty?