My son has regular stomach problems about ever 4-6 weeks. His "attacks" hit suddenly, he becomes nauseous then projectile vomits a few times then wretches for a few hours with a severe headache; he's then weak and nauseous for the next few days.
Today was a usual case of one of his "attacks" except he is vomiting dark green bile, almost the color of Nyquil - he has never done this before, plus his last "attack" was only 7 days ago. Should I be concerned abut the dark green bile? This is NOT a stomach bug, virus, etc.