Did anyone Else HAVE to have one?

I was told I had to book in for one at 38 weeks because I have a high BMI. The thing is, I am only 3kg heavier now as I was at the same time with my first pregnancy,and I didn't have one then. Same hospital.

They said something about there are higher risks as i am overweight, etc and they have to check my back when I asked for more info about the reason for the consult.

I plan on a natural birth and had a natural birth with DD with no complications. My medical history is great. No GD, no excessive weight gain (I have only gained 3.5kg), no family history of any health problems, this pregnancy has been fine, my blood pressure has been consistently 110/70 (the same as what it was with DD's pregnancy).

So I am just concerned and quite upset/offended that they feel i need the consult. I even had a cry about it tonight. Yes I am overweight but I trust my body and feel confident that I can birth this baby. I now all of a sudden feel like they think i can't.

Anyone else go through this and can shed some light on what exactly this is all about and so important that I must have it?