Last night at around 11.45pm I woke up with bad abdominal pain. Went to bathroom, had diahorrea, bit of vomiting, started sweating profusely, stood up and next thing I knew I was coming round on the floor, got up and must have passed out again. Got up again and made it to the bedroom, shaking like a leaf and still pouring sweat and passed out on the end of the bed. Come round and had a load of water and fell asleep. Very tired this morning but a little better. I was so scared, any ideas what could have happened?