I had a nasty problem in class,please help it was so embarrassing what should i do?

I'm really embarrassed about what happened today in class. So Friday we had two hours classes and we can't go to the bathroom without a bathroom pass and I didn't have one, neither did anyone else. Then I begged my teacher but she said no, you need your bathroom pass in order to go to the bathroom. Then I had to get up to write out my work for one of the math problems and out of nowhere diarrhea starts to come out, dripping down my legs out of my skirt and a whole pile of it ended up on the floor. Everyone one was either laughing at my or saying ewww. It was really embarrasing. It got all over this really nice and shy girl and now I feel bad for her too. The teacher sent me to the nurse and it was still dripping out of my underwear onto the floor, leaving tracks of diarrhea puddles to the nurse office. I was lucky there were only security guards outside but its now going to spread around. My mom picked my up early and we went home. Now I'm so embarrased I dont want to go to school at all on monday. Everyone is going to make fun of me.PLEASE HELP!? what should i do?