should and shouldnt

1. READ THIS CONVERSATION

Jessica doesn't feel well so she goes to her doctor.

​Doctor: Hello Jessica. How can I help you?

​Jessica: I don't feel well, I have a stomachache.

​Doctor: Ok Jessica. I will give you an exam.

​Doctor: Jessica you have a stomachache because you don't eat healthy food. You should eat vegetables and fruits. Also you should drink water. You shouldn't drink soda because it isn't good for you. I will give you some medicine today but you should come back again in a week. OK?

​Jessica: All right doctor. I will.