I have to say all you guys are awesome! I really appreciate all the great replies to my questions, ECF rocks! 
I think it is honestly just a combination of a lot of factors as it is a big change all around. I am really taking in less nicotine in comparison to when I was smoking analogs as I have been tracking how many ml I am using a day and it seems very low and I am using 12mg. It has worked out good for me as I am not irritable or have that crawling out of my skin feeling like I did when I have tried quitting cold turkey and it satisfy my cravings so I will just stick with it. No need to increase if I don't need too. So I think it is nicotine withdrawal and possibly just adapting to the ecigs. I did switch to 0mg liquid at about 9pm last night and I actually fell asleep at 1:00am and slept till 8:00, that's 7 hours of sleep so not to shabby!
Once again thank to all for your support!!
I think it is honestly just a combination of a lot of factors as it is a big change all around. I am really taking in less nicotine in comparison to when I was smoking analogs as I have been tracking how many ml I am using a day and it seems very low and I am using 12mg. It has worked out good for me as I am not irritable or have that crawling out of my skin feeling like I did when I have tried quitting cold turkey and it satisfy my cravings so I will just stick with it. No need to increase if I don't need too. So I think it is nicotine withdrawal and possibly just adapting to the ecigs. I did switch to 0mg liquid at about 9pm last night and I actually fell asleep at 1:00am and slept till 8:00, that's 7 hours of sleep so not to shabby!
Once again thank to all for your support!!