I'm a 19 year old female and yesterday I found a lump on the right side of my neck. After looking online for the exact location, it appears to be on my sternocleidomastoid. It's a little bigger than a 5.5 ring size, it's smooth and I would say it doesn't hurt more than hurt. And for about the past week I've been waking up sweating but haven't had a fever, and for the past couple days I've had a sore throat. I'm just wondering if I should be concerned. I more or less am trying to ignore it for the time being but I know I should probably get it looked at. I just need some confirmation whether or not to be worried.