I have a hard lump under my jaw for almost two months

I noticed a hard lump under my jaw recently, I thought it was mumps and after a couple of days, it shrinks to a smaller size but it’s been almost two months now and it’s still there.

I HAVE THE SAME

What do you think of it? Did you went to the doctor?

no you?

no i haven’t. Is this something i should worry about?