What causes severe mild vomiting,abdominal pain, flatulence but difficult to pass gas and constipation for almost a week?

Not normal See a Dr.: If you been constipated for over a week and haven't had a bowel movement, you really need to be seen emergently to make sure that you're not impacted. If you have been passing gas, however, and have had small bowel movements, then this is less urgent. However your symptoms are not normal. So this has to be discussed with your PCP or your doctor to come up with a plan To relieve you of these symptoms and get treated quickly.