Right now I would just focus on what you have going on at this very moment. Don't stress yourself out about next week, you have a few days to figure this all out. I know that any info you can provide Uny will be of benefit to her so that she can assess your situation. Uny will most likely advise you against any medical procedures, because they always carry a risk of harm. The intestines are so sensitive as you well know and colonoscopies can be quite invasive.
Again, get through tonight and tomorrow with a clear head, and with more info from Uny you'll be able to make more decisions:)