2 year old diaper rash / rash

Marli • Lottie Mae norm 3-23-20. Liam Thomas🌈 born 4-7-17. Angel baby 5-4-16. Hubby & I married 11-1-14. Have two Pomeranian `babies`.

I really need help here. He’s gotten a bad diaper rash and rash on his leg.

He had strep two weeks ago. Should I take him back to be tested again? It’s REALLY red.

Do you think it’s something else? Should I just take him in?

https://imgur.com/a/v4oev0P