Sulfur burps and vomitting for days.

Anytime I drink 100% grape juice, pom juice, cran juice, pear juice or apple juice, I get bad acid reflux and then start burbing that gross sulfur tast/smell within 48 hours. I just burp that bad friggin taste for another 24 hours; then comes the nausea. I throw up and dry heave constantly every 5-30 minutes for around 12-24 hours... no diarrhea but the throwing up is dabilitating. After I drink the juice my stomach sort of just shuts down cuz if I were to eat when I drank the juice or anytime after, doesn't matter what, when I start throwing up a day or so later, It's still in my stomach... This only happens to me maybe 2-3 times a year, but when it does, im in bed for 3 days! I know that the juices set it off so I try and stay away from them but it still happens sometimes, even if I haven't come near any type of juice. I've been on nexium and all other types of RX that are similar to it. NOTHING has helped this problem. It's like the d*** doctors don't know what it is so they're just guessing! Gees... please help.