Lymph node. Anything about concerning?

I actually developed a node on my neck suddenly But i have a wisdom tooth infection since very long. I was on medication (Gastric) before i had this node. it was all normal. Did my ultrasound neck it showed helium fatty node and i have GERD problem too acid reflex since September'20 and due to this my voice has started to change. My neck strains sometimes and i have back pain too which is not continuous (sometimes) When i move neck hard i get knuckles. no swelling in neck too except the voice change too it happened after i got cold in December .I have GERD still when i eat spicy food . Is this anything about concerning? and also backside neck swelling is there if i do any stretchs and exercise the swelling goes I'm feeling light . Please throw some light on this . Any doctor so far i visited said I'm being perfectly normal. and also my neck swell when I'm stressed