Mucosy poop?

Trista

My baby girl (4 weeks old tomorrow), has been constipated for about 2 weeks now. I changed her diaper a few moments ago, and saw this? Is this normal for her? I called her doctor yesterday and he told me to give her 2oz of water with a tablespoon of brown sugar to help, but it has definitely made it worse. The only thing that works to help her poop are glycerin suppositories, or a bottle of 1/3 prune juice 2/3 water. I am a first time mom so I’m new to all of this.