Your ENT doctor
is probably correct that this pressure in your ears is from enlarged tonsils, if that is what the physical examination showed. Basically, what happens is that the small tubes (called eustachian tubes) that equalize pressure and drain fluid from the middle ear to the back of the throat become compressed by the enlarged tonsils, since they exit directly behind the tonsils in the back of the throat. This caused trouble with fluid and pressure buildup in the ears, which is called eustachian tube dysfunction.
If the only cause is recurrent tonsil infections or persistent tonsil enlargement, then surgery
is definitely the best option to relieve the problem. At the same time, it may be that you have other additional problems that are contributing to the eustachian tube dysfunction. These might include either chronic sinus congestion or chronic nasal allergies. It might be worth talking with your primary care doctor
to rule out these two conditions, because these are easily treated with simple medications. Treatment might provide some relief while you are considering whether or not you want to go ahead and proceed with surgery.
Book an appointment with your primary care doctor for some more advice, and good luck!