Just a sinus infection? 3 nights of 103-104 fever plus SEVERE headache, sweats, face/head swelling, sinus pain/pressure (no congestion), body aches.

Get evaluated. Fevers above 102 are serious, go to ER or your doctor for evaluation. You should have blood work, imaging, possible spinal tap and treatments. Take family with you to assist with communication and support. Be well.