Checking with thumb in a general checkup

My sister went to a general physician for her check up. Because she have a low appetite she doesn't feel like eating anything. So the doctor proceeded with checking her up. He checked by pressing the thumb below chest or I don't know what that area is called. It's between and below chest. And mistakenly it got pressed little hard. Till then she is experiencing a pin-point pain while breathing. And at night when I have milk to her(which was a daily routine). After drinking he felt full and perturbed (baichaini) and finally she vomited out. She never felt like that earlier. So since that check up whenever she drinks even a glass of water she feels perturbed and full and loose motion when she eats anything. These are the problems she facing. Please suggest a solution for this and please understand the problem. It's started when the thumb was pressed deep inside while check up . Can anything be done about it.