Sayang, better tunggu after pregnancy lah, especially since you're already 24 weeks, infection risk is higher when you're pregnant and your immune system is busy growing baby, plus nose piercings can take a few months to heal properly. A few of my mum friends who pierced during pregnancy ended up with complications, so most doctors would advise waiting until after you deliver and finish breastfeeding if possible. Lepas pantang nanti boleh lah, and baby won't accidentally pull at it either!