yellowish green chunks. help.? The pain becomes so bad sometimes I get really really nauseous. And sometimes it'll wake me up early in morning. And when I say stomach, I don't mean the tummy area I mean the actual stomach rite below the chest. When I throw up it almost looks like mucus, but more yellow and it's very very bitter. Sometimes there are spots of red stuff inside. I've had it for few years now. And once the pain starts, it lasts for 2-4hrs. Can anyone tell me what it is? Do I have an ulcer? or something else??