I don't want to be judged, first off. Thanks.
My husband and I tried the whole 'fisting' thing last night. Took it slow at first, but I think he maybe got a little too into it and was a little bit rough. He stopped, but today I am pretty sore down there. Could he have damaged something? Or is it normal to feel a 'pulled muscle' kinda feeling after that? I'm not sure what to think. I don't want to go to the doctor, just incase it's nothing. Talk about embarrassing. But I don't want to leave it if there's something actually wrong. I'm looking for advice from anyone who has engaged in this also.
Thanks for any advice on this. It's kinda embarrassing, but I'm concerned.

Thanks guys. It's such an embarrassing question, so I'm glad to see that everyone is taking it seriously. Not that my husband was like animalistic rough, or intentionally rough, just got too excited I guess! And, I don't think I will ever be trying that again! A live and learn experience! Thanks again.