Fatal insomnia might be a concern if you literally had not slept at ALL in this time period and your entire family was similarly affected. Poor sleep is not fatal insomnia, that's just run of the mill ordinary insomnia.
28 cases of this syndrome have been diagnosed worldwide, if I recall. I can't even do the math to tell you what those odds are.
Drink some warm milk, take a hot bath, put on some background television or music or white noise you don't need to listen to closely, read a boring book, count sheep, etc.