Read the dialogue and complete it with the correct phrases.

Doctor: Hello, Mr Hall. Come in and take a seat.
Patient: OK. Thank you.
Doctor: Now, ... ?
Patient: Well, it's my shoulder. I got a mosquito bite a few days ago and now it's really swollen, itchy and painful. It hurts very much. I can hardly move it.
Doctor: OK. ... . Yes, it's very red. I'm afraid it's infected and you must have injured your shoulder.
Patient: Oh no! ... ?
Doctor: First of all, you should ... to make sure your shoulder is not broken. You should also ... three times a day. And if it hurts, ... . I'll write a ... for you.
Patient: Thank you. Should I come back and see you again?
Doctor: Only if it gets worse.
Patient: OK. Thanks again.
Doctor: You're welcome.