I sometimes feel as though something is crawling around inside my rectal area. What is this? On a daily basis it constantly feel like Im tightening my rectal muscles and I have to consciously try to release the tightening of that muscle and not do it. Then it feels so much better but as soon as stop concentrating on not doing I later realize I have been doing it again. I had colon polyps removed 6 years ago. Ima 29 year old female. I havent had anal bleeding since but I did alot during my pregnancy, mixed with mucous. Sometimes, I feel shooting pain in my anal area. I know I had been diagnosed with diverticulosis or something like that during the time the polyps were removed. But sometimes I can be very still and it feels like something wiggling aroundmy rectum and trying to come out, or trying to go back in. I also have tail bone pain that actually can be seen and felt in my lower back. Im a 29 yr old female. Why and What is going on?

I was diagnosed with diverticulosis, after a colonoscopy. The symptoms I have are chronic constipation with bloating. I see that the symptoms are the same for IBS. I am wondering if there are two different names for the same condition?