What is wrong with my skin???

Emma

I have had skin problems on my legs with shaving ever since I started shaving, my skin is VERY sensitive and I have eczema,

Last night I used a new body soap and I seem to have this all over my upper arms and my thighs and I’m SUUUUUPER itchy!!!

Any idea on what this could be?? And any ways to get rid of it in less than a week, I have to get a spray tan for prom next Wednesday and if my skin is like this it’s gonna look terrible