It could be due to the position of your vagina. The 'normal' position of the larger part of it is rotated 'forward.' However, in some people (due to a variety of causes) it can be lying slightly posteriorly. That, accompanied by the sex act (if you're on your back), presses rather strongly on the rectum and it can cause the muscles in that area to tighten.
There may be other reasons, but this is the one that comes to mind because of the structural relationships.
I should have included that I am male. :) It read on the internet from only 1 web site that men have this problem more so than women with sex causing dehydration of the colon. Any truth to this? Does any other men have this problem?
Straight sex. Not sex it self but the orgasm. It cramps up all the muscles in my abs or something. Like before a man pees the bladder is closed off before orgasm the same happens with my constipation. Like it is being compacted during sex, even if on an empty stomach, it just tightens up my colon muscles and can not poo for days. It really high up and enemas could not reach it. Might even be the small intestine. dunno. Just looking for possible answers.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.