Hey, so I was fine earlier today, mostly just been laying in bed, and I only ate a bowl of cereal and sweet and sour chicken. Later on in the day, I had a huge bout of nausea, and I vomited out all the food in my system, and felt better for a little bit. Soon, I felt sick again and vomited, this time only pure bile. And 4 more times it happened. What does this indicate?