The concession allowing pregnant and breastfeeding women not to fast is confirmed if they fear for themselves or their child. But the concession is not general in application; rather it is limited to cases of hardship or harm, or when it is thought most likely that harm will occur. This thinking it most likely that harm will or occur, or fear of that happening, which makes it permissible to not fast can be recognised from the clear signs in a specific case, especially when there is obvious hardship or exhaustion for the mother. If there are no clear signs, or the matter is not clear, then you must consult a trustworthy doctor.