So my LO is now 4 weeks 2 days old ever since he was born he’s had problems with pooping! He doesn’t go unless he’s stimulated. He’s both breast and formula fed since he was a week old and is gaining weight fine,however he is always very fussy and strains all day. When he does go the poop is watery and dark green so I decided to change his formula to the sensitive kind but still no change. Has anybody gone thru this? Did it get better or what helped? Thanks in advance