last night I was drinking I only had three bottles and half a vodka and when I went out for a cigarette I felt I was going to collapse so I sat down and then had to go inside but I felt sick and was sweating profusely with my heart racing. I took me shoes off and put my head as low as possible to try to help. This also happened to me on monday not drinking but I had smoked a little bit of weed. This time I had to lie on the floor. Also happened me around 2 weeks ago and I was drinking on this occasion again I had to lie on the floor. Apparently when this happens my lips go blue and all colour goes from my face. I have collapsed with a hangover one day also and almost twice when working out. I have pins and needles very regularly of late and lots of headaches - with some back neck and wrist pain. Do you have any idea what this could be??