For the past week or so, my abdomen has been bloated. I exercise daily and eat lots of vegetables. I was not constipated initially but did have about 3 days of constipation and also serious abdominal pain and nausea. The bloating is down a little today and i've still had gas and bowel movements, and the constipation is better today. I am still bloated and a little nauseous. I am not pregnant. Could I have a bowel obstruction? Do I need to go to the ER?