Rules after giving birth

Is it true that after giving birth bawal maligo for a month??? I did not follow it tho. At first, I was just washing my private area and other parts of my body except my head. I started taking a bath after 2weeks with hot water. My husband’s grandma told us na bawal daw for a month because pag nagkaedad, madaming sakit na mararamdaman sa katawan like her daughter-in-law na naligo after giving birth. Also, I really love cold drinks but my mom said bawal daw for 2 months. Totoo po bang bawal ang cold drinks ng ganun katagal? What would happen kaya if I drink cold beverages? Im a breastfeeding mom and normal delivery kay baby. (or para lang sa mga CS moms ito??)