That's right. Can't catch my breath is what figurative language?

idiom

Explanation:

a characteristic mode of expression in music or art.

or it can be

a group of words established by usage as having a meaning not deducible from those of the individual words (e. g., rain cats and dogs, see the light).

Can't catch my breath is an idiom figurative language. The term refers to a set expression or a phrase comprising of two or more words.