A few weeks ago (2-4 weeks) I was at a friends house and he was smoking cannabis,I sat with him most of the time so I was getting some of the smoke, after I went home I felt a cold spot in my neck on the right side roughly in the middle, maybe a little higher, after an hour or so when I was home I started to feel the coldness run down my spine, and it was flowing through my veins. It felt like my blood was ice cold and I could feel it running everywhere. I still have the cold spot in my head, it comes and goes, normally comes when I'm sitting doing nothing, so I'm not sure if its just my mind playing tricks or if there's something wrong with it.

Can anyone give me a little help? I just want to know if it could kill me or what the worst outcome would be..
Thanks,

(Extra info - My mate told me it was a mellowing cannabis and I was with him for 5 to 7 hours, He feels fine but I don't.. )

Honestly hun I wouldn't worry about it. It's really unlikely that it's related to your being sat next to someone smoking cannabis, or even if you were smoking it yourself. It's maybe a psychosomatic reaction to your worries about it. Any reactions are unlikely to be so localised and reactions to cannabis are rare in any case. You certainly wouldn't be able to feel anything running through your veins.