Alright I'll try to explain this, any help would be appreciated.....

....This just started today but I thought I'd get a headstart and not wait until it gets possibly worse. K so I noticed that under my chin felt tender, kind of like it was bruised, and then I saw/felt that it's slightly swollen(/sore) from my chin down through the middle of my jaw (under where the tongue is).....And it's not my lymphnodes......Any idea what this is? I don't really have any other symptoms that I've noticed going along with it, ie headache or anything...I took a couple aspirin thinking it may be inflammation...Please help, I've tried to look online myself but it's kind of hard to find......Thank you