Try to get to an emergency room ASAP, especially if you are throwing up blood. Being weak, having dizzy spells, etc., could all be from blood loss. You could have something such as an ulcer in your stomach - that can cause you to throw up blood. If you go to an E.R. they can do a CAT Scan to see if you have anything going on internally. Make sure you tell them exactly what's been going on.
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