Anybody know what is going on here?

Every time my stomach is empty (ie every morning around 3 to 9, and other times throughout the day) I get super intense nausea, and end up throwing up white foam and then sometimes that yellow bile (but always the white foam). This can't be normal- most people get hungry when their stomach is empty, not really sick. I have a very sensitive stomach in general, but these past two weeks the problem has escalated to where I'm throwing up 8 times a day :( Does this sound familiar to anybody? Is there anything you reccomend trying until I have the chance to see a doctor?