Begging to be induced....

Nicole
I a have whole body Pupps rash and its tortuter..... It just keeps getting worse and iv tried dozens of different things to calm the rash down with no luck
I'm 38 weeks and being tortured 
At today's ultrasound I was told she's estimating at 8lbs 13oz and my mouth almost feel open..... 
I called and begged my midwife office to induce me and they said they wouldn't even consider it until I was 39 weeks but they don't usually induce.
This is my first pregnancy and iv basically been crying all day from the rash. Now that I know she's this big I'm even more nervous.... My plan was a natural birth and I would still try it to even if I was induced.... But I don't know how much longer I can deal with the whole body rash
I hope I'm not feeling alone in this......