Lump in neck just under jaw joint

I had swollen glands in my neck over 3 weeks ago, doctors put me on antibiotics and swelling went down after the 10 day course. 

But I noticed a hard lump about size of a small grape on neck just under jaw joint, I'm into my forth week doctors have put me on neck and head team list, awaiting the appointment. 

I have no night sweats, no voice change or problems swallowing and no weight loss until I started worrying over the last 2 days.

Which I'm hoping is stress. Which is making me feel worse