Hi Hyaser and welcome to the forums.
Have a read over the post here-
www.healingwell.com/community/default.aspx?f=17&m=2511307A diagnosis is extremely important, as well as having tests to rule out Crohn's disease. Within the responses in that thread, that should give you a great idea of what should be done at this point. If you still have any questions, don't hesitate to ask.