Could I be?

Im 37. Something in me has changed. I have developed PMDD, my whole vagina is changing... thinner lips, loss of volume on the outside and loss of sensation in my clit and libido. The last one has been the most difficult to deal with psychologically. My marriage is suffering because of all of it. My periods are regular but very light and maybe last 3 to 4 days as opposed to 5. Am I even a candidate for HRT? Does this sound like it is perimenopause? that's hard for me to accept because I mentally still feel like I should be 21 lol. im fully rejecting these changes which is actually making it all worse for me. i thought i would have at least another 10 years before any of this happened to me. I just want my body to function how it has been :( I miss feeling sexual desire for my husband and my body responding to his kisses and touches. His kisses used to soak my underwear and now I cant respond to any of it. for the first time, sex actually hurt last night. im just sad 😔 I dont want to be a guinea pig either. I just want to go back to normal 😕