drink lots of water. Buy aloe vera gel for the burns they make it go down really quickly. Does sound like heat stroke to me well a mild version of it.
I have really pale skin so get burned all the time. If you start feeling really bad see your doctor.
I have pure aloe vera jelly and it works wonders! Really cools the burn and takes the sting out of it. I went to work yesterday and left after an hour because I started getting confused and suffering memory loss
Virginal English epidermis demands higher protection, 30 is for the already tanned... oh wait, did I say "virginal"
As someone already answered, it's dehydration. You have to drink water even you don't think you are thirsty.
And for the sunburnt, you need to reapply the suncream frequently. Also, make sure it blocks both UVA and UVB. When I go to Indian Wells, it's almost every hour for me to reapply even I have tanned skin. I can feel my skin tinkled by the sun if I don't reapply the suncream frequently.
I was probably dehydrated too. I took some pics and short video clips of Schuettler