My "sleeping" issue

HELP!!!! Sometimes I just can't sleep. My brain will not quit working, worrying, it's always thinking!!! Someone...make it stop!!!!!!
The last time I had a good nights sleep was March 18th, 2000. How do I know the date so well...that was the last night that I fell asleep preg. w/ my daughter. I had Vivien on March 19, 2000. Ever since I had her, my sleep has gone down the drain.
Unless I take something to help me sleep then I do not stay asleep or I have trouble getting to sleep. Then it is like 3 am and I figure what is the use, I would just have to turn around and get right back up a 5am.
So...I'm about to have surgery on my shoulder and hopefully I will get some much needed rest. I don't really like the fact that Vivien will not be with me and she will be at her dad's house for the week after I have this done. I will miss her so much. But...to get fully recovered, I need my rest. Sure it will be drug induced, but maybe, just maybe my brain will shut off for once in 5 yrs. That would be nice.