Unfortunately I don't have the posts handy, but it was discussed in the sub on Reddit for ADHD that sometimes starting new meds can cause a sort of euphoria feeling early on. I've definitely had that sort of feeling before when I've went a while without then got back on them. For me it tends to last anywhere from a day to a week.
Just be careful and give it the amount of time your doctor said it would take for them to work for your body to get used to them. Especially if you aren't sleeping. That's really not good. Might be best to try and stay in some, as this can be somewhat like a manic episode.
Unfortunately, what you're experiencing right now is the "adhd meds are just coke" sort of thing. Here's your coke effects. Mania and sleep deprivation.
Sidenote, strattera did literally nothing for me. Glad it's doing something for you.