1. As your baby is already 7 months you should start weaning foods for him
2. Although you can breast feed while
pregnant, please do ensure good nutritional intake for yourself as both your babies are drawing major nutrition from your body now.
3. Generally for short periods of time the amount of exogenously given pregesterone which is passed into the breast milk is too small to cause any adverse effects, it is still a good idea to ask why it has been prescribed to you in the first place and is it absolutely necessary.