Hi, I am a 21 years old woman. 3 years ago I have been diagnosed with IBS constipation. However, no medicine works for this constant abdominal pressure. I had a colonoscopy last week because my symptoms got worst but it was normal. However, when I did the bowel preparation, I noticed that I still had this abdominal pressure and fullness sensation even though my stomach was completely empty. I always had stress problems that modified my body (weight gain, hair loss, cellulite) and therefore I was wondering if my symptoms cannot be related to an anxiety disorder or other problems like that.