Newborn amoxicillin Has anyone had to give a newborn amoxicillin? My December baby has a double ear…

Newborn amoxicillin

Has anyone had to give a newborn amoxicillin? My December baby has a double ear infection ? I didn't even know until his well check. The medicine seems to really be messing up his tummy and we are only on day 3 out of 10. Will these tummy issues last for the whole duration of the meds? I'm going to try a probiotic today.