Retin A bad sun burns and rashes, what to do?

I use retin A cream for about 2 months now. I forgot to use lots of sunscreen and went and played in my soccer tournament all day in the Las Vegas sun, my skin now has red blotches that are hard and look like rashes. It hurts badly to put anything on my face and I used lots of aloe but I’m very worried what is going to happen to my skin now? What should I do to help it?