I can feel mine with slight pressure. Don't need to push in really to feel one of mine under my jaw
Do you know for sure it's a lymph node, and not a salivary gland? Those glands are also below the jawline. I had a lymph node enlarged there for a couple years or so. I do suspect mine was a lymph node, because as soon as I got a much needed deep cleaning at the dentist a couple years ago, it's gone. I can't feel it, even if I press quite hard.
It's the big lump under my chin. There is a gap from the gland to the jaw on one side and no gap on the other. I do have a tooth that is decaying above it but dentist won't see me now unless it's an emergency. I wouldn't think a painless decaying tooth would cause a gland to swell
It absolutely can. With a tooth like that, chances are there's some added inflammation. That can lead to a reactive lymph node. Not abnormal at all.