Brief Answer:
could be sinusitis

Detailed Answer:
Hello,

a persistent upper respiratory tract infection with runny and congested nose, jaw pain and headache is commonly caused by sinuses insult by bacteria (sinusitis). Sinusitis usually occurs after a common upper respiratory tract infection (common cold) and presents as a worsening common cold despite an initial improvement. Headache gets worse and the nose symptoms recur.

If that's your case then you'd better visit your doctor for assessment. In some cases antibiotics may help. They're particularly helpful in patients with fever or serious symptoms (like a strong and persistent headache, etc). Other measures against sinusitis include nose irrigation with normal saline and corticosteroid nasal sprays.

The mild cases usually get better without any treatment.

So in conclusion, you'd better visit your doctor since sinusitis is suspected. Your doctor should examine you and propose treatment.

I hope you find my comments helpful!
You can contact me again, if you'd like any clarification or further information.

Kind Regards!

---