Do you give your breastfed baby vitamin d drips? My doctor told me to give them to my daughter who is 4 weeks today. She's been struggling to poop for the past 3 or 4 days. Crying a lot and red face from pushing. She has normal poop color and amount of dirty diapers. Do you think the vitamin d could be causing this? I started them giving them to her 6 days ago. I'm thinking about stopping them to see if it gets easier for her to poop.