The following dialog is for questions 9 to 12.

Nara: Where have you been? The manager has been looking for you. He needs the last month reports.

Edwin: I have been in the restroom. I've got a stomachache.

Nara: Oh, my goodness. What happened? Are you alright?

Edwin: I am not sure. Probably it is the effect of the food I ate yesterday.

Nara: Does your gastric pain relapse?

Edwin: I guess it does. It was fine yesterday.

Nara: Have you taken the medicine?

Edwin: Not yet. I ran out of it. I intend to buy it at the break time.

Nara: Do you bring the prescription?

Edwin: It is in my wallet.

Nara: Well, let me help you buy the medicine. You just take some rest here.

Edwin: That's nice of you. Thanks. Here is the prescription. I need to go to the manager's room now.

Nara: Alright then.

What happened when Edwin was in the restroom?