Allegra-M Tablet While Breastfeeding

Rashes can be due to allergy or sun exposure. It could be because of cosmetics. U can try applying calamine lotion , that should work

As the chest is clear and ventilin evohaler is not showing benifit, you can try allegra surup again. As the cough is after feed, every care should be taken that child is not aspirating during feed, which can occur if feed taken in hurry or in faulty posture.