When i create back pressure, i can see the green fluid come out. It comes out slowly and i have to create a lot of pressure, and some times it doesn't come out at all, but it definetely comes out from that spot. Some days I can even feel it "squirt" out from that area on it's own.

I try not to create back pressure too often out of fear of making it worse.

How much do you buy this surgeon's theory that it comes from the throat and collects in the extraction site? I just don't see how it would "climb" into the spot and collect in the extraction site.