I've Had A Tumor In My Jaw For At Least

I've had a tumor in my Jaw for at least 3 months. I had a hole drilled into my Jaw bone *OUCH* to drain the infection and also taking meds for this for 3 months. I'm having surgery to remove it. When I went for my pre-op they found that I have fluid in my lungs and around the lungs. They told me they are going to put a breathing tube up through my nose . Also said when its removed and I still have problems with my breathing that they were going to insert a treck to help with breathing . Im still having lots of infection coming out for 3 month now . its Horrible and as I said Ive been taking meds for the infection. why after 3 months am I still getting this horrific stuff coming out of the drain why is it not going away.