Had colonoscopy two days ago with biopsy of mass protruding from appendix thru cecum. i have pain. level 5 should i go to er?

Yes: Theyll be able to ascertain if you're bleeding significantly.

Yes, yes: And tell them all of the above, best to go to the er where your colonoscopy and endoscopist are. Be sure to have them notify the gi/colorectal doctor if you already have not called them. Perforation of the cecum is a strong possibility. Also stay npo until evaluated. Do not eat or drink anything and do not take aspirin/nsaids.