Absolutely not. You'd barely raise any red flags at only 32 BMI. I have a BMI of 30. I had a home birth with my first and now planning another with this baby. I am just over the line at 30 now (BMI first time was like 28/29), so though I'm considered low risk on all counts, the BMI did mean they offered me the option to have a GTT this time (which they didn't last time). I declined it as I don't see the point, eat healthy, fairly active, etc. Midwives were perfectly happy with that. Otherwise, it's not been an issue at all. I think above a BMI of 35 they can be a bit more twitchy, but still it's your choice and they have a duty of care to you and have to support you regardless of where you choose to birth.