Hi OP, been a while! I'm not experiencing them, but my wife is.
She's NOT menopausal, and it only occurs in the sleep cycle.
I've been shivering most nights with the air con on! Mind you we've had some really hot nights lately, but this night sweat thing has been going on for a while.
She's RH- as well. I have two littl'ns also RH- and one RH+ and I'm RH+, so I thought if the kids were also hot... but nope, they're not.
So maybe not a blood type thing, and more of an awareness thing. She's amazingly empathic, and sees very clearly.
Bit late here, so I'm off to bed, but I'll get her to have a gander at this thread in the morning.
Your DNA threads are still some of my fav's BTW. EDIT - will just add, her Mum had non hodgkins lymphoma, and she regularly is checked for it. That too is all clear.