Not long ago I smoked weed for the first time, and after a few hits the entire room started moving. Like some kind of optical illusion. Then I felt like I was fading in and out of reality (I'd be fine for 10 seconds, then I'd be freaked out for the next 30). Time went really slow, and my friend and I started to panic. We codling think straight, and it was just really weird. Is it supposed to be like that?