Hi.
I'm a 29 years old healthy male, I exercise daily and have never had any serious condition. Around 10 days ago, I noticed a small lump in the right side of the my neck, on the underside of my jaw above my adam's apple. I believe it's actually a lymph node, but I can't tell for sure. A few days ago, it was noticeably larger than it is now. Right now, I'd say its size is 3 or 4 mm, while a couple of days ago was 6 or 7 mm.