My 2 week old has diaper rash! :((( what's the safest diaper rash cream to use? Anything else I should be doing?

It all depend upon what pediatrician suggest to use for your baby. There are plenty of diaper rash cream in the market. THough most of them have few important common ingredients, they differ from each other in many aspects. In India, sebamed diaper rash cream is quite popular among the moms and yield better results when used. Source - https://ccrhindia.org/best-baby-care-products-india/#baby-rash-cream