Been having each ache, sinus pressure, face pain, nasal drainiage, ears feel plugged up, dizzy/lightheaded, fatigue, headache for 3-4 weeks. Dr gave me Flonase 3 weeks ago no help. What is it?

Sinus infection . It sounds like you have a sinus infection. Flonase will not be enough. You need an antibiotic that is very effective for the sinus like Augmentin (amoxicillin and clavulanate) 875mg two times a day for 2 weeks. You also need an sinus decongestant like claritin-d 12 hour also twice a day. On top of that you should use a saline nasal rinse like the neti pot several times a day. Once things settle down then the Flonase will work.
See your PCP. If your Flonase medicine doesn't work, see your doctor for final diagnosis and more treatment. In most cases, sinus disease treatment is easy.
Go see a dentist. If you feel like there is no sinus infection, the symptoms that you are describing sometimes are caused by a tooth infection. Going to go see your local dentist can help you figure this out. If there is an infection and its causing all these symptoms, then there will be some treatment that is needed.