Hello I appreciate any advice if possible.

I have recently found a hard pea shaped lump on one side of my neck. I don't know how long it's been there for as it's completely painless and I found it when putting my hair up. It's been over a week since I found it and it's still there. I know there's a chance it could just be swollen lymph nodes due to fighting an infection but would that normally be the lump on both sides?

Everyone I know is telling me not to worry and it's probably nothing and I don't want to go to the docs and waste peoples time. Only symptoms I've had are constant nausea, insomnia and loss of appetite but I have also been under a lot of stress recently so had put all that down to that..

Should I be concerned or should I just wait a while and see if it goes? Thanks for taking the time to read.