I live in a rural area where night sky is very visible so i often go outside and look at sky. i was leaning on my car looking straight up when suddenly a very bright green light appeared. it was the shape of a star,but much closer to me than the stars or any aircraft flies. it stays stationary for approx 45 seconds then quickly flies north approx 300ft then stops, hovers briefly,just a few seconds, then slowly continues north disappearing and reappearing twice before it completely disappears. normally i'm not frightened by things i see in the sky. i became very dizzy, hot, and nauseated &began vommitting. this lasted approx 30min following. i dont know if that was related but i had felt completely fine before and 30 minutes after encounter.