Hi Laney, and welcome.
I'm just 45 and seem to have been getting peri symptoms for the last 6 months or so, maybe longer.
My cycles started fluctuating early last year, which was followed by palpitations, then insomnia, anxiety, mood swings, awful fatigue and generally feeling not like myself.
I've seen various GP s and even had a 7 hour visit to a&e because of my heart. All doctors have focused on the anxiety side as causing everything, because my FSH hormone test in October was "normal." I have recently been sent for various cardiology tests, but I'm 99.9% certain the tachycardia is caused by hormone fluctuations - it seems to be cyclical, coming and going, usually starting in the early hours of the morning.
Because I can't get any help from my GP, I have booked to see a private learning women's health specialist I found via this site. I am hoping she'll be happy to discuss HRT to help, because although I have pretty good days, the bad days are awful and are affecting my ability to do things, enjoy my children etc.