Discolored Peeling Sunburn?

ok so a few days ago i got a really bad sunburn on my back and my face. Yesterday my face was really dry so i kept moisturizing it like every hour but little parts peeled off and now there are lighter parts of my skin where it peeled but now that its moisturized how do i get rid of the discoloring? Also just today when i was walking my back started sweating and now there are bumps where i got sunburned and it started peeling and the part that peeled off is VERY noticeably lighter. My mom said that the bumps are from sweating in between layers of skin but will they go away? And also, what will happen with the lighter skin?