19 y/o male, skinny, 2 movable nodes in right armpit, and 1 movable node in neck, anxiety, had nodes for quite a while now, feel fine. advice please?

Lymph nodes: Lymph nodes are located in your armpits and neck among other spots in your body. They should movable within the skin, can get bigger and tender when you're sick. It is concerning when they are firm, feel like pebbles, don't move in the skin and are growing larger and larger. If you are concerned about them, please see a doc and have them checked out.