<s>[INST] i realize this is going to sound crazy. Im having pain in my lower back I think it the pelvic area. my husband and I had intercourse last sunday morning first time anally we were both had been drinking and I was kinda balled up facing away from him. I noticed when I wiped some blood. my question is I thought my backache came from the position because during I was thinking oh my backs going to hurt. then the next day I carried about a 60lb child about 500 feet. I was wondering if I should be concerned [/INST] Hello, I have studied your case. Anal sex can lead to tear of rectal mucosa which may lead to back pain. If bleeding persist then you need to consult doctor. Sex in odd position can give rise to back pain. Medication like methylcobalamine and analgesic will reduce pain. You can do yoga exercises and focus on spine extension exercises. You may consult physiotherapist for guidance. He may start TENS, or ultrasound which is helpful in your case. If you find this answer helpful do not hesitate to rate this answer at end of discussion. Hope this helps. Wish you a speedy recovery.  Take care </s>