Hey yall, I need some help. Last night, me and the gf were messin around with anal sex. We've done it multiple times without problems. I'm not huge by any means, but definitely thick. I lubed up plenty, and i had already put my finger in to loosen it up....she was relaxed and told me to put it in. So i barely fit my head in, and all the sudden, she was in what she described as the worst pain she's felt. No bleeding, no pain on my end.... we don't know what happened. She had to lay down in bed for an hour. I gave her some tylenol and an ice pack....she is finally feeling better this morning, but it scared both of us. Any idea what happened? Has anyone experienced this? Thanks for any and all help!