I have had an issue with inside my bum for many years but have been to embarrassed to ask my dr. Whenever I sit down for too long or when I lay on my back to go to sleep I get this very uncomfortable feeling inside my bum. So uncomfortable that it makes it hard to fall asleep or be in a car or airplane for a long time. It's not painful just extremely uncomfortable. When it happens I cannot stay still and often have to stand up which makes falling asleep very hard. I've tried looking on the Internet for this feeling but have never found anything on it. I hope you can help me. I am a 33 year old female and I've never had any kids.