I had the same thing and I went to my dr's office and had a gastrointestinal endoscopy done and in 1 week the results were in and I had an active inflammation and a bacteria called Helicobacter pylori and just need to take medication for 14 days and I felt better and a lot of times this bacteria starts in you small intestants which will cause the constipation and cause ulcer. You should read more on this bacteria and see if you might have it and check with your dr. and don't ask for this test demand it cause after a certain age and not taking care of it causes cancer in your stomach and intestants I was lucky that my dr.'s good and made me take every test to find out what was wrong.

I am 28 and for a week now all of a sudden my bm's have becom really small and brown for a week now; before a few months ago I had been diagnosed with gastritis at ED and put on prilosec when my stomach had been burning real bad. I have no burning symptoms know that I can tell but really wonder why not having a solid bm for a week now all of a sudden? Any help or advice?