B.C.
It could be part of it, or it could be depression.
Peri-menopause can go on for 10-15 years - periods get scrambled (they come and go when they want to but gradually disappear), hot flashes - you can't mistake a hot flash when you wake up sweating so bad you need to change the sheets and pajamas (this also messes with your ability to get a good nights sleep - which contributes to your feeling awful)- vaginal dryness - more prone to UTI's.
Extra strength Estroven works with keeping the hot flashes under control for me.
It also helps to cut back on the caffeine (to help you sleep better at night).
A good nights sleep can be a real mood lifter.