Nauseaus

I have been feeling so  nauseaus lately and throwing up. This lasted about 2 months and losing 20 pounds before I went to the doctor. The test came back positive for H. Pylori. I have been taking antibiotics and prilosec almost 2 weeks now. I thought I was getting better and was finally able to eat decently. Now, this week the symptoms are back and much worse as far a the vomitting goes. I have no pain in my stomach, just the quesiness and vomitting. Well, that and the thought of food grosses me out and any bad smells make me gag. I called the doctor back today and she wants me to go in for a scan of my gallbladder. But, everything I have read about the gallbladder symptoms say that you have pain. Has anyone experience these same symptoms? What was the issue? Help! I am so tired of being sick all the time and unable to eat....