Worst day ever what should I do!

I had the worst day ever. I had a cross country meet today and we came there late and the race has already had started, so instead of watching it we ran the course. When we were about to run the course I asked for some water before we ran but he told me no thats bad. So I ran without no drink of water ( really dint drink nothing today just a small bottle of gatorade). But when we started running on the first time around the course I just had to stop because I just couldnt breathe or swallow, and I was dizzy. He started yelling at me and started saying your always making excuses during meets, so he let me go get something to drink. I was on my way back and here come some friends I met 2 weeks ago that beat meet last meet. We were just talking about how much we like running before I start again. Then here comes the coach yelling at me saying YOUR JUST STANDING THERE! YOUR A PATHETIC EXCUSE OF A LONG DISTANCE RUNNER! YOU DONT DESERVE TO BE ON THIS TEAM GET OUT OF MY FACE! YOUR PATHETIC! I didnt really say anything. Just let him yell at me. I know im not a pathetic excuse because im the only decsent one on the team, because my first race was an 18:15 and only a freshmen. So I decided to quit the cross country team. So when i went home i told my mom about what went on. And she told me i can talk to him about it tomarrow or she will come up to the school tomarrow and have a word with him shes really mad. Also does my coach have the right to talk to me like that? What could happen if imform the principal? But now that im off the team i still gonna be a runner but im just gonna run by myself again.