my daughter is 1 year 8 months "My daughter is not able to pass the stool easily. It takes her a lot of time—sometimes even an hour—to do potty." and She also has an ulcer-like sore near her anus." what I do now

A. Mam you should check with the doctor what is going to be the best medicine for ulcer second I think your child is low on water fibre and fluids which is why your child is having so much time to pass motion so give more of that and apply castor oil in the navel before sleeping and give prune juice in the night before sleeping and start the day with a glass of warm water this will help