I’m 50 and can’t sleep

I believe I’m going into perimenopause or maybe I have been for a while and didn’t realize (have had some nauseas and night sweats) but I’ve been having increased anxiety and terrible sleep. In about 5 hrs, I’ll have been awake for 24 hrs. This means I’ll be having a righteous panic attack (which I just got over and is the reason I’m still awake now) and if I’m lucky it will wear me out enough to maybe get a couple hours of sleep. I’ve always had trouble with anxiety and insomnia but nothing like this. I can just feel my heart pounding in my ears and it’s been this way for almost 12 hrs. Last time I had this problem, I called the ambulance and all my vitals were normal so that reassured me and I was able to get sleep that night. Anyone else experience this? I’m already taking Prozac and Diphenhydramine which usually helps with my allergies, anxiety, and lack of sleep. But it’s not working today at all and I’m freaking out thinking I’ve got that fatal insomnia disease. Oh, I also notice that my body has a weird hum in the last couple of weeks as well and right now when I am trying, I’ll twitch and it wakes me up. THIS SUCKS! I can’t even remember my anxiety being this out of control. I’m gonna have to go back to the Doc which I hate because social healthcare takes such a long time and they really regally don’t want to help you. I guess I’m just looking for some comfort and maybe a fellow menopause warriors who has been through it. Kind words would be really comforting right now. Am I gonna die from lack of sleep?

EDIT: I managed to fall asleep but now it’s been 28 hrs since the last time I got sleep. I’m really starting to get scared. I have doctor appointment tomorrow. I’m so scared I’m going to end up in the nut house.