I was giving blood. They didn't put the needle in properly so blood wasn't flowing. So they wiggled the needle a bit and some came through. Not much though, so took needle out.
As soon as needle came out I passed out. Apparently I was out for 5 minutes and was shaking like a seizure. So rang for ambulance.
I was in hospital for most of night, never felt so ill in my life. Pins and needles everywhere, even my face, felt sick and chest tightening.
Eventually it all wore off. Feel miles better today, but got a big bruise on my arm where they were pissing about with needle!!!