I have been vomiting for the past couple days, along with an intense thirst, but vomited all the water back up, no blood or bile in it. To keep from becoming dehydrated, I started sipping a couple tbsp. of water every fifteen minutes or so until the vomiting stopped and I switched to diluted Gatorade, which helped quite a bit until this night when I began having black tarry diahrea with a strong iron like smell. I have also suddenly become exceptionally weak and feel hot and cold at the same time. Oh, also while I was vomiting, I had severe stomach pain which came in waves--that has passed.