What does it mean if your stomach hurts really bad you can't walk or stand? I have tried using the restroom, I have tried applying pressure, everythings making it worse and I feel like im going to vomit. I am 16

You. You need to have a medical evaluation. Anytime you have that severe of stomach pain, you need to have an emergency evaluation, also if you have vomiting, fever, or lightheadedness. Please seek out an immediate evaluation.