Curious how many other 38 years old women are feeling mental fog like I do?

I am scared and confused. I am tracking my cycles diligently, but find myself overwhelmed and confused more often than I used to be. I find that I need to sleep more, but my sleep hygiene is not good, I am wake up several times during the night. I do think I should work out more consistently, reduce sugar intake, and completely cut out alcohol to see whether any of these would create any improvement. However, my blood work, fasting glucose, A1C, weight, blood pressure is all normal. I find that there are more days where I have no motivation and existential crises. I can't get out of the couch and do anything productive. My cycle is changing, going from 22 days to 26 to 42 over the last 6 months. Anybody equally lost?