Dr. Joseph Leon

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Your tonsils are in the back of your throat approximately where the sides of your tongue attach.

If you are a mouth breather, that can contribute to a thickening of the saliva while you sleep.

Coffee does not directly cause cavities, but there are several factors which can contribute to development of decay.

That does sound like symptoms related to clenching your teeth.

Those symptoms can indicate a number of things which are not able to be specifically diagnosed without an exam. They are also serious enough for a long enough period of time that it would be very important to see a physician.

  

If it is a baby tooth, keep working on it.

If not, it may be a cavity which should be evaluated by a dentist.   

You have a range of symptoms that can be linked to many causes.

It is important with the fever and headache to find out the true source.   

If the cancer affects the salivary glands, it could limit production.

Also, depending on other causative factors (tobacco, alcohol) there could be an overall dry mouth problem.   

Rinsing with a dilute salt water mixture (1/2 tsp to 4 oz warm water) is an easy way to help.

Sometimes it takes quite a while for a tooth to loosen up and it is important to keep working on it.

If it goes too long, the gum can "grow" up into the tooth and make it difficult to remove with fingers alone.