Insomnia

I've been battling insomnia too for a year and I haven't slept in over 30hrs and I'm exhausted to the point of breaking down in hysterics but I can't sleep. Help. Ugh. I take ambien but I'm having to babysit my nephews, all 3, today with my grandmother and even though I'm exhausted and screaming in pain and throwing up bad, in havin to stay up with the older 2 while my grandmother is napping with the baby. Sooo tired!!