Where is the pain at.

[tufguy]

The patient: I have pain in my body.

The doctor: "Where is the pain at or where is the pain exactly at?"

Please check.

[emsr2d2]

"Where is the pain?" or "Where exactly is the pain?"

[Tdol]

Or Whereabouts is the pain?

[emsr2d2]

Note that "I have pain in my body" is not a natural statement. It's grammatically correct but it's not something a native would say.

[Raymott]

Exactly. Where else are you going to have pain? Sometimes I wish you could occasionally take it and put it in the cupboard, but it doesn't work that way.

[tedmc]

I would say: I feel pain in my stomach(instead of "body").

[tufguy]

I would say: I feel pain in my stomach(instead of "body").

Can we also say "I have pain in my hand, leg, eye, teeth or head?"

[Rover_KE]

We have specific expressions for pain in a few areas of the body: headache, backache, stomachache, earache and toothache (but not teethache).

[With different meanings, there's 'heartache' (emotional hurt and not physical pain), and 'faceache'.]

[Tdol]

Can we also say "I have pain in my hand, leg, eye, teeth or head?"

I would use a pain, but with some of those, ache would work better.