So yesterday around 2 I discovered I got majorly burned on my back, bum and legs. It's extremely uncomfortable to wear clothes or even walk, I haven't gotten this burnt since a couple years ago. Now I'm wondering if anyone knows how long it takes for the stinging to go away this is retry much day 2, I heard it takes 3 days depending on how bad your burnt. Anyone know ? Anyone been super burnt before and have any remedies to help out other than aloe jel that literally isn't helping. Please anything I'll try ! I'm desperate to feel comfortable at some point

Here's a picture of part of my bum cheek to show how bad it is.