blocked nose.. mucus

hi.. last year a had an ear operation because i had cholesteatoma..my eustachian tube was damaged maybe whn i was little... the surgeon cleaned out my ear from the infection and did nothing to fix eustachian tube because there is no treatment for that.. thats wht he said!... few months ago my nose got blocked.. i thought maybe it was just cold so didnt bother... its been over 6 months.. and still my nose is blocked left side of the nose.. i had operation in my left ear... there is mucus inside the nose which goes down my throat and when i brush my teeth it feels like as if everything coming out of my throat... usually a lot of thick slimy mucus comes out.. i sneeze a lot too.. i dont know what is the problem.. i will b going to see my ENT doctor next week.. can you tell me what my problem is.? i want to hav an idea before going to the doctor.. do i need a surgery? is there any treatment for eustachian tubes? and is there any treatment for ear blockeage with air and popping ear?