Small lump in neck (under chin)

Hey everyone, i seem to have a swollen lymph node, had it around 3/4 days. It was pretty tender yesterday but don't seem to feel any pain at all today. It feels solid which is my worry currently im going to the gp tomorrow to get it checked out driving me crazy! I'm alright withing myself for the most part but am i overthinking about this?

 

Thanks.