Glad you got your obturator back in, cleaned, you a bit calmer. Probably -- I'm guessing -- it was some mucus hanging down, or that's just the structure of your "defect," as they like to call it. At some point you will feel brave enough to look up there, and you'll see its shape and get to know it a bit. Don't rush yourself; you'll be ready when you're ready. Once you get started with the radiation, your RO will be looking up there regularly and you might then feel reassured that all is "normal."