Baby no poop more than 1 week

Exclusive breastfeeding, baby is 3 months old, no poop more than a week, good latch nman, mabilis mapuno ng pee ang diaper at madalas umuutot Pero no poop. Ano pong pwedeng gawin mga mi. Already tried massaging her tummy, bicycle and rectal stimulation (tickling her butt) according to my pedia. Ano pa pong effective way.