my lo has not yet poop for 24hrs what should i do? should i bring her to her pedia immediately? my lo is EBF

That's not necessary. Some babies can hold their poop for weeks without any health problems. My baby before used to poop every 3-4 days, when she was 1-5 months if I remember correctly. The longest was a week. Just continue to breastfeed your baby if you're ebf.