today was the first day of summer vacation, and i spent the entire day outside swimming and biking with my friends. I now have a bad sunburn on my arms, tops of thighs, shoulders, and back. it hurts really bad! i am going to camp on sunday, and i really dont want to have a hurting sunburn while im there. any ideas as to what will make the pain go away for good by then, and also get rid of the redness? THANK YOU!!!