Pregnant a year after life with many changes (2,3,6,3)
I believe the answer is:
in the family way
'pregnant' is the definition.
(I've seen this before)
'a year after life with many changes' is the wordplay.
'year' becomes 'y'.
'after' says to put letters next to each other.
'changes' is an anagram indicator.
'life'+'with'+'many'='lifewithmany'
'lifewithmany' with letters rearranged gives 'inthefamilyw'.
'a'+'y'='ay'
'ay' put after 'inthefamilyw' is 'IN THE FAMILY WAY'.
(Other definitions for in the family way that I've seen before include "carrying child" , "Expecting" , "pregnant" .)