Endurance/Exercise induced insomnia

So, week 2 into training, I couldn't sleep. Like at all. Stayed awake almost all night one night and thought..."surely this can't be normal-I've never worked out so hard in my life...you think I would be exhausted..." I was! I just could not sleep.   So, I drank a Gatorade at 2am and finally slept about 2 hours. The next day, I looked up "insomnia while training" and read lost of information on increased hormone levels, depletion of all kinds of things and the need to eat more carbs and sugar while training. I was excited to have a glass of orange juice or chocolate milk before bed and noticed it helped! Increasing my carbs a lot more this week (never would've said that before!). I've pretty much had pasta everyday. Had spaghetti for breakfast today with whole wheat noodles and ground turkey. I'm still learning to use "goos" and simple sugars, caffeine and carbs to my benefit before workouts. It's so hard to eat different especially when my appetite has been decreased. Today is week 3 day 4 and I missed my first workout yesterday. I slept about 2 hours the night before, had a pulled muscle in my back and my hamstring was real right, was supposed to get up at 4 and do 45min on spin bike, then work 12 hours in the nicu. Yep, not smart. So, I promised myself I wouldn't beat myself up about it (because there were several days I over-trained or did extra), reset my alarm for 6, drank a big cup of chocolate milk and slept maybe an extra hour. Work was miserable, felt like I barely made it through my day. However, because I took a day off and ate appropriately, I slept wonderful last night! It was the best night of sleep I've had in 3 weeks. I feel a little more encouraged today. I have an easy 30 minute run. 5am swim tomorrow and 5k race Saturday. I can do this! I am over halfway there. It's crazy, 3 weeks have flown by. I've had to rearrange everything to train. It's been hard and I'm looking forward to a little break. I feel a lot better about swimming and a little better about the spin bike. Still kills my bottom! Even with a cushion. People say you get used to it...