Hormone changes
plus BPD or depression or anxiety or bipolar disorder
it is perhaps an extra thing we have to deal with
I do feel most months for me i have very noticeable symptoms. I might feel more irritable, restless, hot, need more food, headaches, i don't know as i also have a mental illness and there is always something going on

stress, sleep problems, diet, not getting out for my walks, everything seems to affect me, it is hard to pinpoint it sometimes.
Do you take vitamins? Vitamin D is important this time of year, and a walk every day is so important. Oily fish or fish oils. Veg at the moment like sprouts, i mash up with potatoes. Protein, bananas, nuts, it is important we get food sorted to remove that potential mood changer.