I was in Phoenix in August a few years ago and I nearly died. I don't do well with heat.
I am really weird when it comes to temperatures. I do get the pregnant woman overheating thing, but I am freezing a lot too. I have always just had weird body temp swings!
Actually it's New Mexico... and it really is quite a bit different here (in the east mountains - so high elevation) then somewhere like Phoenix. The summers do get in the 90's, but the humidity is so low, that if you're in the shade, it's no big deal - direct sun can be brutal though. Last winter we had a few nights go down to 20 below zero, so we do get cold. This winter hasn't been that bad!! We have been mostly above freezing during the day for both December and January. The summer I was pregnant in MI was definitely worse then the summer I was pregnant in NM simply because of the humidity!!
I'm freezing... all the time!! I hate it. I mean luckily it hasn't been as cold here in Vegas as it has the rest of the country. But, I have my house set at 74 degrees, and I'm always in long sleeves and extra sweaters.