Jezzy I hear the danger in saunas is due to overheating. I imagine it would be ok if you didn't stay in too long? But I don't know for certain.
We were at my mom's house last night (DP and I and bro and SIL who are due the same day we are and my sis), talking about when my mom had us (my siblings and I were all born between 1974 and 1987). I call her "madre de muchos" seeing as she had 8 kids. I wanted to know how her birth went with my older sister, her first, seeing as I figured that would be a good guage for how mine might go. That was in '74, she went to the hospital, insisted she not be knocked out, but, she was out for the birth and doesn't remember a thing that happened! What a mess, I'd be livid! With me (her 2nd) she was at 43.5 weeks, and insisted she was having me, and they sent her home. She went in a few hours later and I was born in less than an hour (I think she said 20 mins), they gave her an epidural, and I came out before it took. She seemed to have lots of "too fast for medicine" experiences. With one of my brothers they were epiduraling her, and she protested because the baby was being born right then, she was going on about how someone needed to catch it, worried the baby would fall off the birthing table! Fortunately someone got there right in time (not sure what my dad was doing).
Here's the kicker though, when my youngest brother was born, my mom went into labor (broken water and all) 1.5 months early (very odd, because she was "late" with the rest of us). The hospital staff said they weren't sure but it might be twins, so, get this, they sent her, while in labor, to be x-rayed, to see how many babies were in there! x-rayed!! in labor! The technician said, "oh is this your first sweetie?" my moms said, "no it's 7th and maybe 8th" my brother was transverse, so they took him via c-section, with an icu team ready to wisk him away. He was born 1.5 months early at 5lbs 14 oz... they decided he was pretty healthy, and just incubated him.
That conversation was a REAL eye-opener as to how birth was, and to how I DON'T want thigns to go. Granted, fortunately they don't knock people out every time, but still. But also, it was interesting to me to know that my mom had a pretty easy go of it for most of her kids. Which is nice, I take after her in nearly every way thus far, so I suppose I won't be in labor for a week or so! ha! But lordy I cannot believe they 1. knocked her out when she insisted they not, and 2. x-rayed her to see the baby while in labor! Quite honestly I think I'd take u/s over x-ray any day of the week, if I had to choose, kwim?
We chose a CPM for our homebirth this weekend, and really I'm very excited! DP is too, he really seems to be getting into this, so I'm happy about that. Even my Gram is cool with it (of course she and most of her siblings were born at home too). Seems like things are looking ok here.