What Causes Headache & Pain Under The Rib?

I have had pane in the left side under my rip, for a mouth or two, the pane seems to be moving up, my side. Now I got a headache and am a bit queasy and disy. I have fond blood the toilet one time. I have a doctor’s appointment in 2 days. Shod I go to the emergency room or wheat till my doctor appointment?