Misssinful,
Alright here is my 2 cents for what it is worth.
I am a sufferer of really bad chronic sinusitus. As a result I get impacted sinus infection 4-6 times a year rounding out my total to about 9 sinus infections a year. When I have an impacted sinus infections these are my symptoms:
1) Bad sinus pressure above the eyes, at the bridge of my nose, and just below my bottom eye ridge.
2) Run a low grade temperature... some times not detectable. Text book definition is a fever between 99.4-100.7 for 7 - 10 days.
3) An impacted sinus infection results in my lower frontal sinuses filling up and lymph nodes swelling to such a point that pressure is placed on some nerves that result in my jaw and teeth feeling like they have been knocked loose. With this comes teeth sensitivity to cold and hot foods and fluids.
4) Chronic cough as well as dragging out the occasional multicolored chunks anything from solid white, yellow, green, and ocassional blood laced ones.
5) Sore throat due to excess drainage.
6) Sensitivity to pressure and temperature changes.
If you have a combinations of these...especially the sinus pressure headaches, you should go to your general practitioner versus a dentist.
If you only have sensitive teeth... try Sensodyn or another type of sensitive teeth toothpaste. If a couple of weeks of the new toothpaste does not produce relief then you probably should see your dentist.
Wishing you the Best,
MG