Yes, it was an upset for Bernie in Michigan. By a hair, but it was an upset, thanks to Republican ratf*cking and some Hillary supporters getting a little too complacent. But for the sake of everything holy, stop freaking out. Let the pictures tell the story. Numbers according to New York Times counts at the time of posting/updating.
Delegates: before tonight, Clinton +196. After tonight, at least Clinton +213
Popular vote (updated 3/9 at 7:25 am PT): before last night: Clinton +1.5 million. After last night: +1.65 million.
So get off your butts and get to work making sure Hillary Clinton stays on top. Don't panic.