I am pretty sure I have Sinusitis, as in right now. I have upper tooth pain and lower too, especially where my wisdom teeth were. I am not sure if this is normal, but it went from very sensitive felt like bruised gums to wanting to grind them down from pressure. I also have chronic strep, I think it helped motivate sinusitis. So much like you I felt the symptoms and tooth pain was very badly described so maybe this helps you.