What’s going on? A cheek infection ?

Ni

For the past week the inside of my cheek has been swollen and pressing against my gums. This honestly happens to me every couple months for a couple days then goes away. I want to get it figured out so im going to the dentist in the morning.

I’ve been told possibly a tooth infection but I honestly don’t think so. I don’t feel like I have a cavity and there are none back there that I can see. I went to the dentist about a year ago and they told me I had no wisdom teeth coming in. It’s not like there’s an abbess on my gum the issue is with my cheek! Has anyone experienced this? I’m super worried I’ll go home tomorrow with a serious medical issue 😣😣