I was diagnosed with Acid Reflux - Why am I spitting blood? What can I do to prevent it?

Spitting blood. Spitting up blood can be a serious complication of acid reflux - if the blood is arising from your esophagus or your stomach, then you have a bleeding source that needs immediate attention. If the blood is from a tooth or you bit your tongue, then it will stop. So, check your mouth - if no bleeding source present, you must be seen asap. Gastritis, esophagitis, or an ulcer must be assessed.