So, dont worry about it, but get it checked just in-case for ease of mind and so you can take the next steps to treat it if it is anxiety
Anyway, excersize is proven to help anxiety
. So is healthy eating. Chamomile tea helps ease anxiety, meditation, deep breathing (like, close your eye and lay down, breathe in slowly as much air as you can, hold it for like 3 seconds, then slowly let it all out...do that 3 times or more...whatever you want).
Those are just a couple techniques...