Gosh, where to start! To keep it short...ish I found myself getting a lot more anxious than normal over your everyday worries then out of the blue I started to get crippling anxiety for no apparent reason which really scared the living daylights out of me. Also started waking in the night and not being able to get back to sleep having been the queen of sleep in the past! This was almost 3 years ago when I was 43. I went to the doctors, talked things over and was put on citalopram 20mg. This made me feel horrible at first so went back to docs, saw a lovely lady who said those magic words "I think it could be hormonal".
Basically I stuck with the citalopram which was a lifesaver in the end and once my mood improved was put on hrt also. 3 years down the line I am still on the hrt and 10mg of citalopram and feel great most of the time. I really did know nothing about the perimenopause, thought your periods stopped and you had hot flushes......OMG, how naive was I?