Vomiting "BILE ? VERY SERIOUS...GET TO EMERGENCY ROOM ASAP. I had food poisoning I threw up normal and diarrhea, never 'BILE". GET TO EMR ASAP.
It could be food poisoning or a virus. I think without a parent there you need to get some help and have somebody take you to urgent care at least.
If it has not stopped by now, I highly suggest that you go to the ER to get some meds or an IV started, this is not something that you should wait to get better for any length of time. See a doctor ASAP.