What is this?!

Kendal

So long story short, about 2 weeks ago I switched from Pampers Pure diapers to Honest, just because I got a good deal on them. A week ago a rash started appearing and now it’s worse. We just started using Pampers Pure diapers again because my first thought was a chemical reaction or something with the Honest diapers. Now I’m thinking it could be eczema. What do you ladies think?!