Always cold

I’m always cold. Like, everyone else in the house is warm or comfortable. I’m freezing. All. The. Time!!! My bf is a bit of a bigger guy, so he’s always wanting windows open, we have to sleep with the bedroom window open al night. I have a duvet, a weighted blanket AND a flannel blanket and I’m still freezing.

I’ve had bloodwork done on a consistent basis, I had low iron when I was pregnant 10 years ago. The last bloodwork showed a slight vitamin D deficiency. I take extra B6+B12, plus extra D along with a multi vitamin. No thyroid issues.

Any ideas on why I am so damn cold all the time and anything I might be able to do about it?

Edit ... exercise is no issue. I work two very active jobs and have a pretty good workout routine. As for eating more, admittedly my eating habits have gone down. I’m just not physically hungry as I used to be.