Mis71mum, I could have written your post 2 years ago. I was so desparate to find whats going on with me that my thoughts overwhelmed everything I did! Really everything - from morning to night, and during! At the time I was on 20mg citalopram which obviously wasn't doing much. I was trembling, disoriented, foggy, scared, anxious, nauseaus, sweating and even so, menopause didn't occur to me as a pissible cause! My periods have shortened but still regular.
Long story short, when blood tests showed perimeno and low estrogen, I stared Femoston and gradually, very gradually begin to feel better!! It took full 4 months for me to be able to confess that the worst was over! I do have blips here and there but am grateful for the better days!! Hang on, there is solution, and light in the tunnel!! Big big hug from me, I know it is hard to believe it now but I am sure you will find the best therapy!!
BTW, I am 45, too.
Milamam