Praise be to Allaah.
A Muslim woman who misses any fasts in Ramadaan because of being pregnant
or breastfeeding must make them up after she no longer has that excuse, just like the sick
person of whom Allaah says (interpretation of the meaning): “… but if any of
you is ill or on a journey, the same number (should be made up) from other
days…” [al-Baqarah 2:184]
A woman may space out these days (i.e., she does not have to fast them all
at once, consecutively), as this is easier for her. (See also "Seventy
Questions About Fasting ",
, under the heading Books on this
It is better to make up missed days before the next Ramadaan comes, but if
the excuse is still present, she may delay making them up until she is able to do so. She
should not resort to feeding poor people (instead of fasting) unless she is totally unable
to fast. And Allaah knows best.