Strep Throat And Very Tired Is This Strep Throat Or Something More Serious?

Is this strep throat or something more serious? - strep throat and very tired

Ok, my neck hurt since Thursday this week. It is hard to swallow for me, I have red spots on the roof of my mouth, felt very, very tired, headache and fever but no cough or congestion. What is the meaning of like a sore throat or something else?
PS I can not go to doc today, but I'm def. Go tomorrow if no improvement ..