I Have Had Severe Stomach Pain For 2 Days; No

I have had severe stomach pain for 2 days; no nausea or vomiting. I took a laxative last night, and have been to the bathroom several times, but it is only liquid. I am concerned that it could be intestinal obstruction. I have been putting a heating pad to my abdomen to help relieve the pain. Today, is the best day; I can walk now, but can't bend or stoop without pain. I am thinking of making an appointment tomorrow to be checked out, if I can get an appointment. Do you think that it could be intestinal obstruction? Before this happened, I had a stool, but it was narrow.