What's the matter?
I've got a fever. OR I've got a temperature.
What's the matter?
I don't feel well.
What's the matter?
I've got a cough.
What's the matter?
I've got a headache.
What's the matter?
I've got a cut
What's the matter?
I've got a toothache.
What's the matter?
I've got a sprained ankle.
What's the matter?
I've got a sore throat.
What's the matter?
I've got a backache
What's the matter?
I've got a runny nose.
What's the matter?
I've got a burn.
What's the matter?
I've got a sprained wrist.
What's the matter?
I've got a bruise.
What's the matter?
I've got a neck ache. / I've got a pain in my neck.