Hi there! I'm new to the forum,
I know where you're coming from with the anxiety feelings;I've suffered from it for most of my life,got worse as a teenager but improved with counselling .
The perimenopause seems to be slightly different though as you can wake up in morning feeling anxious for no particular reason ,and I've read that it's caused by adrenaline surges due to hormone imbalance .They're not pleasant but seems to be quite a common symptom .I take citalopram 40mg which I've been on for 10 years which has helped me ;I'm hoping these are keeping flushes at bay. Learning deep breathing techniques & meditation can help ,also sometimes distracting yourself e.g calling a friend or watching TV. Hope you feel better soon. xx