Is it permissible to abort a fetus at 25 days of gestation if the mother has diabetes and is taking medications that are not allowed during pregnancy?

If the pregnancy is in its early stage (within the first forty days) and a trustworthy, specialized female doctor advises that abortion is necessary to prevent a certain harm, then abortion is permissible. However, abortion out of fear of hardship in raising children or to suffice with a certain number of children is not permissible.