Is it normal that I get really angry when I get hurt?

Ever since last football season , The game before our last , I dived over the offensive line and hit the other team's fullback head on , I'm proud to say I got the tackle , But I also got the injury , I hurt my back quite bad , And I Just got EXTREMELY pissed off , I have no idea why! I couldnt play in the last game , So that might have something to do with it. But now , Every time I get hurt doing anything , I get really really pissed off. Why is this?