I also think a contributing factor for my less-stress-ness was the fact I was used to hospital and medical staff iykwim?
I don't think I had the 'white coat' factor because I was ok with questioning those wearing them. At that stage hospital and it's smells etc was a place of comfort and relief for me.

Once I knew my body could cope ok (it was a bit unknown then - cardiac issues), I was fine to birth someplace different later on.

xoxoxo
Lulu

I came back to write something similar to your first sentence. I was misdiagnosed and untreated for many years and understand that doctors don't always have the answers or know everything, even when they sometimes think they do This means that i am comfortable (my DH would probably say TOO comfortable) in questioning medical professionals and asking for reasons before going ahead with treatment or tests.

Although i don't think i would go as far to say that hospital is a place of comfort or relief for me! But i do realise that sometimes they are necessary.

If all goes well this time, i think i (and hopefully those close to me) will also be more comfortable to look at other places next time.