The other day I went to the pool for about 30 minutes without eating, I felt fine but when I got home and began to take a hot shower I got extremely dizzy, legs got weak, my vision got blurry and tunnel like, my hearting started to go in and out , and I almost threw up. I drank some fruit punch really quick and some of the symptoms went away. Im a female... Could this be a simple case of being dehydrated or something different?