Former setter finally getting pregnant (9)
I believe the answer is:
expecting
'pregnant' is the definition.
(I've seen this before)
'former setter finally getting' is the wordplay.
'former' becomes 'ex'.
'setter' becomes 'pectin' (I've seen this before**).
'finally' indicates one should take the final letters.
The final letter of 'getting' is 'g'.
'ex'+'pectin'+'g'='EXPECTING'
(Other definitions for expecting that I've seen before include "Regarding as likely to happen" , "pregnant" , "Anticipating, looking forward to" .)