For about 3 weeks now I haven't felt like myself. I've had a fever on and off and about 5 days ago it really hit me, extreme muscle pain, neck pain/stiffness, headache. my doctor did full blood panel on me and says everything looks good and I just have the flu, but I don't have a cough, sore throat, runny nose no symptoms that would be considered flu? just the fever and body aches.
If you have a stiff neck, you should be seeing your doctor again or go to the ER. It could be something more serious. Three weeks is too long to have those symptoms without taking an antibiotic because it could turn into a bacterial infection. I suppose you have not been bitten by any ticks or you would know about it. That can cause Lyme Disease.
your symptoms sound like the flu.
Your symptoms are the traditional flu. those other symptoms you mention are symptoms of a cold.