Anal pain after sex! 😫

Last night my husband and I were having sex (him on his side vertically and me on my back horizontally). After we finished I went and cleaned up a little came back to bed and all of a sudden I felt like I was being viciously raped anally with a giant pole. It was sending the craziest pains through my spine and my lower abdomen. I couldn't move and was the pain was so intense I was crying. My husband and I can be adventurous in the bedroom so I'm use to some general after sex body aches but this pain was ridiculous.