My DD is 5 1/2 months & I just started BLS this week (she was grabbing food from my hands) we have done peach slices, banana & just started baby carrots. She is eating A LOT more than I expected her to. But starting last night she was really straining to poop & then when she did it was very firm (not pellets- more like toddler poop) this is the first poop she has had like this- before that they have been normal BM poop. What does this mean? Is she eating too many solids too fast? Should I back off a little or eliminate anything? I did purees with my other two kids & they were also formula fed. Help!?