Sudden jaw pain concern.

My throat was sore for a few days and I had phlegm, so I took medicine, but it didn't get better. When I tried to open my mouth wide to look inside, after about five minutes, my jaw suddenly started to hurtㅠㅠ

I thought I would be okay after waking up, but today as well...

I'm in my mid-40s, and I have many aches and pains everywhere, and my recovery is also slow.

I think that the painkiller in the cold medicine will help me get better, but I keep worrying about it.

Should I at least do a hot compress?

Which hospital should I go to if I continue to be sick?ㅠㅠ