I've had some pretty bad burns..usually when it is sorta cool, maybe even overcast and I don't think about the sun being as strong. Aloe Vera and Advil works well for me.

One time, in Florida I got burnt so bad that I had extreme chills. My skin was really hot, and my body was shivering to try to cool it down. A cool shower, or even cool, wet rags helped cools the skin so I stopped shivering.

Hope your burn heals quickly!