Just me

I haven't been able to get a proper nights rest for the last 3 nights and it is killing me.  Last night was not so bad, I think I finally fell asleep at 2:30am.. but the night before I was still up at 4:30!  I then about the time I'm settled and having a good ol' snooze, the alarm goes off and I have to get up.  Of course I hit snooze 3 times, and end up being 1/2 late to work. 
I'm not sure why I'm having trouble.  In the past, I'd be snoring in 5 minutes.  My hubby would laugh at me, because I could close my eyes and be out like a light so fast! 
Since I've started all of this, I've really cut down on my coffee, so it's not that...  I thought maybe I did my workout to late, and that kept me up - but yesterday I worked out through the lunch hour and I was still tossing and turning.  I'm just not sure.  I just lay there - and think about my diet.  I think about how I can cut even more calories. 
Last night I was feeling like I didn't do enough excercise.  The Dr. says 20 minuites a day for now.  I've been doing 30, but still feeling like its not enough.  I want to take the weight OFF and last night I was lying there feeling bad because I had a good 2 hours in the evening where I could have gone for another walk, or lifted some weights - and I didn't.  Instead I layed there and watched Big Brother.. ugh.  Both Hubby and Dr ask me how badly I want to take the weight off.  I want it bad - but I know, wasting valuable excercise time like that isn't going to help me get to my goal any faster.
Today is a new day, I will make the most of it :)