Suffer a bit of pain currently (5)
I believe the answer is:
incur
'suffer' is the definition.
(I've seen this before)
'a bit of pain currently' is the wordplay.
'a bit of' indicates a hidden word (I've seen 'a bit' mean this (the answer is formed by a bit of the clue)).
'INCUR' is hidden within 'pain currently'.
(Other definitions for incur that I've seen before include "Become subject to (eg, taxes)" , "Bring on oneself, probably unpleasant" , "Take on (obligation)" , "To become liable to, suffer" , "Become liable or subject to" .)