I've been taking Omeprazole 40mg's once daily for two weeks now. ...

I've been taking Omeprazole 40mg's once daily for two weeks now. I'm 28 years old and up until September have never been sick a day in my life. After an endoscopy, was diagnosed with a "hiatal hernia" after months of a mysterious vomiting syndrome and put on this drug by my Gastroenterologist. The first week and a half was great, it was able to control my vomiting. But now, after thirteen days of taking the drug, I've been feeling incredibly fatigued over my whole body, like the way you feel the day after you lift weights. Stabbing pains in my ribs, chest and abdomen that come and go. The feeling in my stomach of being "eaten" from the inside out. It's horrible. Like others, I've also been getting quick, stabbing headaches that come and go in a flash. Joint pain. Muscle cramps. Bloating. Depression. Waking multiple times in the middle of the night. Strange and vivid dreams. Severe nausea in the morning when I wake up. It's all really, really weird. And as of last night, my vomiting has relapsed. Keep in mind, I've NEVER experienced ANYTHING like these symptoms before in my life. I've got a follow-up appointment scheduled with my doctor in three days and I intend to get off of this stuff immediately.