My 7 week old baby hasn't been pooping for past 6 days. Her last poop blow out was 6 days ago. Thereafter, only very very minimal poop seen in her diaper. Mostly poop was found only around anus area and that's it. Should I be worried? She's breastfed and I'm a low yield mother who only pump out 1.5-2oz per session. I Breastfeed her and gives her once expressed breastmilk per day for fear that she might not Hv enough to drink from my breast.