Just Had Surgery Nov. 17 Colon Cancer. Finished Chemo July.

Just had surgery Nov. 17 colon cancer. Finished chemo July. I have pain in my left side below ribs. I thought it might be gas. No fever. No vomiting. Hurts to lean to left, or bend from waist, hurts to take a deep breath or to stretch sneeze. Notice if I press on my side or back I can feel it hurt in frontleft . I drink water, tea, coffee. No soda. Took a laxative no problem. Can't get in to my doctor till Tuesday. Any suggestions, or advice , or idea what it could possible. Be no problem urinating. On blood pressure with water pill.