Sore throat problems?

So I'm going to the doctor in a couple of days if this doesn't go away but i just wanted to know ur opinions

I randomly got a sore throat Tuesday afternoon. It lasted until all day Wednesday, and it is now Thursday and i still have a sore throat. It kind of feels like my tonsils but im not really sure. I have no other symptoms- no white/yellow spots, no fever, no body aches, no loss of appetite. Just sore throat/tonsils and it hurts when i swallow. When i went to the nurse on Wednesday, she said it just looked red and i should drink plenty of fluids and gargle with salt water. I was relieved, but since i woke up with it today i felt kinda scared.

On Saturday, i went to a party and kissed a boy I've never kissed before--pretty sure he didn't have mono. I was also yelling a lot to talk to my friends because the music was super loud. (Just saying this in case it has to do with my situation)

I also have GERD, but I've been avoiding all foods that cause it AND when I did get affected by it, a sore throat was never a result. So I'm 99% sure that this is not the case.

Any opinions would be great, thanks all.
Sore throat problems?
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