I'm happy that you have asked me to assist you with your child and hope that you can benefit from my many years of helping parents like you.
Hello. Are you able to chat?
Perhaps you have stepped away from your computer so I'll stand by.
Most babies go through a period where their stools become less frequent and a bit thicker at around 4-6 weeks so this is entirely normal and nothing to worry about.
Sometimes when formula is supplemented it can cause them to slow down a bit too.
No, actually all babies do this at 4-6 weeks and parents think this is constipation but as long as the stools are soft then it's not.
That's exactly what most babies do at her age and I assure you is nothing to worry about as it will correct itself in time. If she goes more than 4-5 days you can give her either a glycerin suppository or an ounce or two of apple juice.
Constipation is not about frequency but rather about having hard stools, like rocks.
Babies stool patterns change all the time since their GI system is changing and over the first several months you are adding foods and juices to the diet too.
Other than being a bit gassy and fussy, it will not hurt her.
Then she's well hydrated and she will eventually poop.