Re: Lump under jawline
Well, no one can diagnose you over the internet, but I can tell you that most people can easily feel a couple of lymph nodes under their jaw even if they're not swollen.
I suspect that what happened was that your first doctor was correct, and your lymph nodes were swollen due to the infection, which is why you first noticed them. Now they are probably back to normal. But as I said, even normal, most people can still feel those lymph nodes if they really press under there.