Ha! Stingers are practically a way of life. They prime you for things to come. Expect an injury and expect to be asked to "play" through it. More so than in football.
Your coach probably likes that you don't give up, even if losing. Everyone knows that along with conditioning, skill comes with practice in wrestling. What is important is wanting to win.
Lots of wrestlers quit in the middle of a match. They don't get pinned but they fuck around and "look busy" so to speak. They always suck but sometimes get a varsity jacket because no one else is in their weight class. The jacket is all they want. Coaches see that and they see people really interested in winning. He'll probably mentor you until you start winning if the latter is your case.