Poor you! I know exactly how you feel. I haven't slept properly for months and months. There is always something going on in my head. Worrying about this, that or the other! I sympathise so much.
Yesterday I bought a new laptop and then spent nearly 6 hours trying to get it to connect to my wireless router! Would it connect? Would it heck! When I went to bed lastnight I lay there thinking what if I did this, what if I did that, and how should I tell my husband that the new laptop wasn't connecting properly! Nightmare!
I eventually got up and went downstairs to watch the tv! Went to sleep at 6.00am and the kids and hubby woke up at 7.00am to get ready for work!!!!! AAAAARGH!!
I am SOOOOOOO tired!
Good luck with the sleeping!