Has anyone had the experience of a sweep? If so, under what circumstances? Did you have to ask or were you offered?

I'm 38w 4d today and am due to see my midwife again at 39w. As I'm carrying a very large baby (over the 107th centile and I'm a size 10 frame...) I've been under consultant care with frequent growth scans.

I have an appointment with the consultant the day before I'm due because my midwife wants me to be induced by term + 2 before she gets too big in there! She's said they won't induce early with circumstances the way they currently are (although if anything changes then it's a possibility) but do you reckon she'd do a sweep?

They offer them willy nilly in America it seems! Surely it's much better than being induced for you and baby? I know it's not guaranteed to work but may at least push things in the right direction? I'm too scared to ask in case she says no! Any advise please?