I have a sore throat, sinus pressure and headache, nasal congestion, sore teeth, no fever, fatigue, and sore neck. what is going on?

Sinus inflammation: Sounds like you could have a viral or less likely bacterial upper respiratory tract infection. If the sore teeth you refer to are in the upper premolar to molar area and most importantly seem to involve multiple teeth without obvious dental pathology, that pain may very well be of sinus origin. See a physician if the symptoms have lasted more than 10 days and a dentist to r/o other possibilities.

See a doctor: Your are obviously sick with some sort of viral or bacterial infection. Sinus pressure, headache, nasal congestion, sore teeth, are all symptoms of a sinus infection. Is there a color to you nasal discharge? You should go to to a doctor who could prescribe some medication to help you.

Allergic sinusitis: You could be having allergies; try Benadryl (diphenhydramine) or claritin.

Infection v allergy: If this is acute, then most likely it's a viral infection. If you have a history of allergy, then it could be cause. If antihistamines don't help, it's probably a virus. Your doctor can tell you with more certainty with a physical exam.