Bad diaper rash!

Hi ladies, my baby girl has a bad diaper rash due to something she ate. She got it Saturday morning, I’ve been putting desitin (purple one) and it doesn’t seem to be helping if anything it seems to be getting worse. Her sitter told me today she was bleeding a little bit.

Any home remedies that will give results fast? It’s the first time she has a rash so I’m not really familiar with what works best and it’s killing me to see her like this.

I read coconut oil is good and baking soda bath and oatmeal bath?

I’ll be calling her doctor tomorrow.

Please help a mama out ! 😩❤️