Hello There,
Vomitting sensation while brushing with pain in abdomen on right side strongly suggest Hyperacidity. You need to visit to Physician for thorough clinical examination. Here you have provided disease history briefly which is not much helpful in preliminary Diagnosis.
Next Steps
By the time of Physician's consultation, take meals 3 times a day. Morning Breakfast should be Betwenn 7 am to 10 am; Lunch 12pm to 3 pm and Dinner 7 pm to 9 pm. Don't lie down right after having Dinner. Stay awake for atleast 1 hour.