I have swollen lymph node on l side of my kneck, sore throat, I also feel very tired, my eyes are slightly itchy but mainly feel uncomfortable & warm.?

Unilateral symptoms. This can be as simple as strep or staph infection in the throat or snus. It can also represent tooth abcess or adenovirus infection of the eye.
URTI. Your description sounds like an upper respiratory tract infection. Use artificial tears for your eyes and see a regular doctor for everything else.