Ok So My Fiance Just Got Over Food Poisioning A

ok so my fiance just got over food poisioning a few days ago. well he is sick again this time he is complainning that his lower right side is hurting him... sharp pains. Also he can not keep anything down at all and he is having hot and cold fashes. he feels drained of all his energy and is feeling bloated. Plus he has been waking up with heartburn all throughout the day please help