Hi & Welcome. I can understand your concern regarding the safety of Asthalin Rotacap during pregnancy. Asthalin Rotacap (Salbutamol) is FDA approved category C drugs means it is to be taken during pregnancy only when the potential benefits are more than fetal risk. You can use it by inhalation route that is much safer because the amount of drug absorbed through this route is very less to have any side effects during pregnancy. Try to avoid triggering allergens, dust particles, damp & smoky environment and have regular visits to your doctor for further consultation. Best wishes.