Question: have been expereincing diarrhoae with constipation for about 5 weeks now. For most of the day I feel that I have someting stuck up my back end. Had a lot of blood tests done on liver and kidneys which were fine. I was also tested for celiac disease which was negative. I am expericing a lot of gas as well. My stool was tested and nothing found. Had a rectal exam done and nothing was found. Also doctor tested tummy and said it was soft. I am booked in for a colonscopy in a couple of weeks time. It was suggested I may have irritble bowel syndrome. However I am scared that it could be something more sinster. I have been major stress lately in looking after eldery parents which is very tough. I have also had a scan on my stomach area, gallstones were found as well as a fatty liver. I am had a scan on pelvic area a cyst was fouund on ovary with some calification. I know that all of the above conditions can cause both diarrhoea and constipation but can they cause alternativing diarrhoea and/or constipation or could it be a combination of all of them. I have lost no weight intentionally. No blood found in stool. I am perimenopause.

Thanks. Hopefully if my stressors will reduce I might feel better. Can stress/Irritiable bowel cause a lot of gas.
There is IBS in the family.