Hi and welcome to NeuroTalk!!
I'm really sorry that you've been advised to stop playing the sports you obviously love. That's got to be hard especially when you're a year-round athlete. I've posted the link to the Post Concussion Forum in case you haven't found it already. I'm sure there will be members there that can relate to your circumstances and offer you support and advice.
Glad to have you here!!
http://neurotalk.psychcentral.com/forum92.html