What Causes Sore Throat Along With Swollen Lymph Nodes?

I have a severely sore throat, basically to the point where I fear swallowing. My Lymph nodes seem to be swollen, and they are tender to touch on the outside of my from neck. My tongue is covered with a mucilaginous compound. My whole body aches. My tonsils are red, and they have white pus pockets on them. I ve had an on and off fever for 2 days, accompanied by chills. I know this is not flu, or the common cold. In fact, these symptoms lead me to believe this is either mono, tonsillitis (Which of course can come from the group A strep bacteria), and strep throat. I m assuming it s strep. Could it be, and do I need to see a doctor about it?