Hi Humblebumble,
I'm no expert however, peri can start anywhere between 40 to 44, so your age is right to start peri.
For me when I was in peri, my periods were erratic, I'd miss a period one month and be really heavy or really light the next time I had a period. I actually kept a period diary. I got hot flushes etc, then I noticed I was need to pee more.
have you had a chat with your gp about this? I know some gp's are clueless but your gp may be okay, mine is really fantastic.
I hope you get sorted, I'm post meno and the main reason i started hrt was to help my sleep and anxiety and I'm so glad I started hrt. It isn't a magic bullet but I'm glad I made that decision, however, we are all at different stages in our menopause journey xxx