Thanks everyone for your replies. I went out and bought some Melatonin so I will try it tonight and see how it goes.

I'd love to have tea, but I can't really drink any liquids past around 8 (I know, I sound like I'm 90!!) Otherwise I'll be up all night going to the bathroom....

Work was stressful today, but I went and got my hair done tonight and it was so relaxing!

I'm really hoping the melatonin helps- I don't plan on taking it constantly as I do manage to get a few more hours of sleep on the weekends, but I really need it during the workweek. Today I could barely move by the afternoon, I'm just physically and mentally exhausted.

Again, thanks for your replies and helpful insights. I have no one to talk to about this stuff, so it means a lot to me to have you all trying to help