Ay, 11 days talaga is quite long na, mama, I'd really suggest checking with your pediatrician just to be sure, kasi kahit masigla ang baby at kumakain nang maayos, gusto mo lang i-rule out if may constipation or other issue. A few of us pumping moms din noticed na sometimes ang exclusively pumped milk babies ay mas malusog ang digestion, pero every baby is different talaga, kaya best ang doctor's advice para sa peace of mind mo!