I’m sorry this is happening. You mentioned being in school so my first thought would be to discuss this with your parents and get their advice and help. Better safe than sorry so getting checked out by a doctor to determine what’s happening and how to prevent it sounds wise, but again bring your parents in on this so they can support you and also hear what the doctor has to say. They know you, your medical history and your family history best. Listen to them before your friends. Your family doctor can determine if you need to see a neurologist. It’s usually a long wait to get that first visit with a neurologist but you should be able to get in to see your family doctor quickly. The greatest danger of passing out is hitting your head or some other injury from falling. I hope you find some answers and solutions.

By the way, passing out during a blood draw is not that uncommon but you should let the nurse know that might happen so you can lie down as a precaution.

I have no opinion on piercings other than if you’re going to get one make sure it’s done by a reputable professional so you don’t get an infection or worse. Again, if you’re a minor please talk to your parents about all of this.