Oh fiftygirl, I'm so sorry you're having such a terrible time of things at the moment. I can't offer any advice on Citalopram I'm afraid, but I can relate to the sleepless nights.
I take Amiltryptiline for a compressed spine but my GP has told me I can up the dose if/when I need help sleeping, it has helped me a lot with that. I also practice a bit of self hypnotism, which can be good to help me slow down and relax my mind and body.
I am seeing my GP about it being peri tomorrow and my priority will be the insomnia.
I am very fortunate in that I only have myself to worry about and I work for myself. I don't know how ladies with family's and external jobs function, I honestly don't think I could.
Stay positive, we're all here to support you x