Quitting midseason of my senior year?

Ok so here is the deal. I have played Varsity baseball all four years of high school, this year being my fourth. I am a pitcher and I planned on playing this year. During our first couple practices my arm got screwed up from pitching to much. It's midway through the year and it looks like I won't be able to pitch the rest of the year. Should I quit? It's my senior year so I kind of want to have it free if I can't pitch. Any help is welcomed!