Hi. I Am A 29 Year Old Female. I Recently

Hi. I am a 29 year old female. I recently came down with a cold and now I've noticed a small lymph node in my supra clavicle area... Right side. I went to the dr they gave me antibiotics for a sinus infection but she didn't seem worried about the lymph node... She said I don't even know what to call it... It's way smaller than a pea maybe a small bead. Lol any ways I looked up my symptoms and read a bunch of horror stories. There are more swollen lymph nodes on my neck under my jaw. The one in my clavicle does move and is a little rubbery.

Should I worry?!