What you have is called emetephobia and many people suffer from it, so you are not alone or weird or crazy, OK?
You have to tell your parents so they can get you the help you need to overcome this. It IS fixable.........nobody EVER dies from this. It just makes you really miserable and afraid to go out and have fun with your friends and that's no way to live life.
If, for some reason, you don't feel you can tell your parents, talk to another adult you trust.........an aunt or uncle, your teacher or the school nurse, someone at your church.
I know you're scared but that's mostly from keeping this "secret" all to yourself. I promise that you will feel 100% better when you talk to your parents, OK?
Don't think about it, just go talk to them right now. The sooner you do, the sooner you'll begin to feel better.
Please let us know how you're doing, OK?
You're going to be just fine.
Take care
Greenlydia