After food i feel like its in my stomach not digested n throat feel a lil tight n nauseous n bitter taste in mouth n little burning in chest. why is that? this is 2nd time in a month.last time i had 3 vomits and motions.

Need to examine: It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. What you described is suggestive of gastroesophageal reflux disease. If you are overweight, that is probably making matters worse and it would help to lose weight. It would be prudent to see a doctor, preferably a Gi Specialist. Wish you good health!