suspicious and scared

At my 3 month check in October I brought to my drs attention a swollen lymph node under my jaw.  You know when you get a cold and sore throat those nodes on the side of your throat, it's there.  Of course he says it nothing and I gladly take that response, right?  I also brought it up at my December appointment he says he doesn't feel it.  

I can still feel that it is bigger on the right side.  I don't have a cold or a sore throat.  I have surgery on Monday and am so conflicted about what to do about this.  I don't want to know but I know I can't bury my head in the sand either.