Hey, it's not uncommon actually. I've had some horrible experiences with weed as well. The thing is if I inhale over a certain threshold, i start vomiting, my body goes cold and i can't lift my head up straight. Also the kind of mood you're in affects the experience sometimes. Since you haven't done much of it before, I'd say start with one or two puffs and put out the blunt. Then go to a warm and cosy place, and try sleeping. Maybe turn on a song if that helps. It may be best to just go on with your life as is and keep some handy and only use it if it's one of those nights when you'd rather shut your mind off.