Must the pregnant woman make up the nine days she did not fast due to vomiting, and when should she make them up?

If you are able to make up the fast without harm to yourself or the infant, then you must hasten to do so before the coming Ramadan. However, if you are unable to make it up, or if it would harm the infant, then it remains a debt upon you until you are able to do so or the harm is removed.