As yiu are suffering from acid peptic disorder.
As it is worsening after delivery. so now you will have to take some antacid
or antisecretory drugs
commonly used drugs are Pentoprazole, Rabeprazole
any of then after consultation you can take.
also you will have to avoid Spicy and Oily food ,
and take meal in small amount in frequent duration.
Also include fruit in salad
get well soon