Ok so that happened to me last year and it was a swelling of some kind of gland: here’s the story and it might help you (T.W: cussing) : woke up and my ear hurt one day mom said it was probably an ear infection from me not cleaning my ears and next day- ear pain was still there but my throat hurt like Michael Myers just came and tore it out in my sleep, tole mom about it we started to get worried- that’s when a few days later I woke up (ear/throat pain was still there) and my jaw hurt like a motherf**ker and so I told mom and she said we’d go see a doctor. A week or two later we hadn’t gotten to the doctor until my left side of my face was swollen and it hurt 10x worse when I woke up. We put some ice on it and went to the hospital and then it came back that it was a LYMPH NODE INFECTION. a gland that’s supposed to FIGHT OFF INFECTIONS BUT F**K NAW. I was prescribed some antibiotics and I was good to go in about a week. Hope this helps you with your stuff and sorry it was a long paragraph