Sorry, here is my post. past pefect, past simple, or past progressive.

[fuadha]

Simple past, past perfect,or past progressive tense:

Beth: Hey Fred, what happened to your arm?
Fred: I was working in the garden and I had got dirty. So I decided to turn on the water and clean up.
Beth: had you slipped and fallen?
Fred: Yes. When I was finishing dinner, my arm was hurting.
Beth: So what did you do?
Fred: I went to the hospital. By the time the doctor finally saw me, my arm had swelled.

[Allen165]

I'm not a teacher, but here are the changes I would make:

I had gotten dirty while working in the garden.
Did you slip and fall?
When I was finishing dinner my arm started hurting.
By the time the doctor saw me, my arm had swollen up.

[bhaisahab]

Simple past, past perfect,or past progressive tense:

Beth: Hey Fred, what happened to your arm?
Fred: I was working in the garden and I had got dirty. So I decided to turn on the water and clean up.
Beth: had you slipped and fallen?
Fred: Yes. When I was finishing dinner, my arm was hurting.
Beth: So what did you do?
Fred: I went to the hospital. By the time the doctor finally saw me, my arm had swollen up.

This is fine.