I couldn’t produce enough breast milk so my newborn was constantly still hungry. Last night we decided to give her some formula and she took it fine. I can hear her belly gurgling a little and also had a bit of diarrhea few times. She doesn’t cry or anything with the formula so not sure if her belly is upset? Went to the doc today and all she said was it could he normal and if we wanted to give this formula few more days to see that it would be fine. Just gave her some more and immediately had a huge wet /diarrhea fart. It’s not very watery and not that much so idk if it’s considered diarrhea. What do you think? Is this lactose ? Should we just give a diff formula a try? My newborn is 5 days old today.