Obviously, the rash
cream has not helped.
If your child has had diarrhea
for 8 days now, I am worried about his/her hydration status. A newborn can quickly become dehydrated with diarrhea. In addition, the blood and pus indicate an infection that is not being treated.
Please take your child to an emergency room. They will be able to take a stool sample for culturing and sensitivity studies to help identify the pathogen causing the illness. In the meantime, an appropriate antibiotic will be prescribed.