Hi
Thanks for writing to the forum!
The symptoms can be due to several causes like acidity, GERD or reflux disease or hiatal hernia, irritable bowel, liver and gallbladder problems and even due to gastric paresis. I would strongly recommend you to see a gastroenterologist (a specialist who looks after the diseases of our digestive system).
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!
Have you gone to a gastroenterologist? My sister kind of has the same symptoms but she has really bad heartburn with it. Have you had any tests done?