Why is my sunburn doing this?

i got sunburnt 2 days ago from swimming in the pool without a shirt and later i realized i got really burnt. first it turned really red and the next day it started to blister on the shoulders and ooze and little bits of skin started to peel. i put aloe on it and did everything i could. today, its really red and itchy as crap. when do you think it will go away? or atleast how long do u think it will itch before it stops?