I Went For A Colonoscopy. Routine Screening. They Were Unsuccessful.

I went for a colonoscopy. Routine screening. They were unsuccessful. They switched to a pediatric device snd still successful. They want to put me under to try a 3rd time. They suspect scar tissue due to past surgeries related to endometrious and ovarian Cancer. Lease advise. I am not wanting to try a 3rd time. The prep made me sick.