Obviously you need a squeeze-in appointment with a family doctor, an internist, or health clinic very soon. That abnormal EKG is worrisome. Many things can cause your symptoms. But you should not be in all this misery and you need a general workup done. By the way, an endoscopy can look in your stomach to see if there's anything in there. Until you see the doctor, avoid eating fatty foods, which includes peanut butter. To keep up your strength, liquid nutritional drinks with low fat should go down pretty well, or even skim milk and V-8. When you take your stomach contract medicine, drink an entire glass of water with it.
ggreg has some great advice for you. Just had an additional thought to add. Since your pain is in the upper left quadrant, I'm wondering if you may not be having pancreas problems. You may have sludge in the common bile duct that is preventing the pancreas from emptying its load of enzymes properly. Pancreatitis can cause the symptoms you describe, and in the area you describe. Might even be a Spincter of Oddi dysfunction involved. Most certainly avoid fatty foods and all alcohol until you find out for sure what's happening, but get yourself back to the doc!
i missed my period its been 3 or four weeks i dont actually vomit. i feel nausea alot though. feels like i have jello in my stomach and yet its very tense.. wtf is going on???