It sounds like you are on a lot of meds. Please ask your doctor or pharmasist if any of your drug combinations are making you sick to your stomach.
Incidentally, some antidepressants can cause GERD, and vomitting can be a symptom of GERD. Also, medications for GERD can make you feel better temporarily, but in the long run worsen the condition.
Either way, do consult your doctor as your vomiting could be a serious symptom. If you are not comfortable with what he tells you, get a second opinion. Don't ever be afraid of hurting your doctors feelings, KLW. Your health is top priority and you are what matters most!