I am 16 year old female everytime go in hottub or bath i feel like im hallucinating or dreaming like it has happened before makes me want to puke/fain?

Likely low bp: Happens when immersed in warm bath or jacuzzi your blood pressure drops , hence not enough blood supply to the brain, could be the cause for your symptoms. Please see your doctor for assessment, don't be alone in a tub, jacuzzi, or sauna/ steam rooms, keep warm showers short, use lukewarm for bathing , if you can, wish you wellness