Sounds like you got something laced or you had a panic attack. I've had both happen to me and neither are fun. The best way to avoid that is to quit smoking. Things will fall back into place if you do. Just make sure you don't take up drinking, like I did, when I quit smoking. The panic and feelings are ten times worse coming off of booze than I've ever had from laced weed or panic attacks smoking weed... Good luck.