Ay alam ko yan, sobrang worrying talaga kapag walang poops! Since exclusively breastfed siya, it's actually not uncommon na mag-stretch ng ilang days without pooping, madami sa amin mga nanay, ganyan din ang experience, pero since 5+ months na siya at malaki na, I'd really suggest checking with your pediatrician just to be sure lahat okay lang and walang blockage or anything, kasi mas better safe than sorry pag ganyan. Siguro din ask about vitamins if needed na based sa weight niya, pero doc lang talaga ang best mag-advise about that.