Should I pull a All nighter?

I took a long nap this afternoon in fact till 10pm and I can't sleep now and i have a midterm at 8:30 one cl is an easy one for me geometry i know all the stuff for it. The next one is US history which is so so for me I've been preparing my essay for it an it's now 2am and I still need to study more. But if i do i will be staying up all night and i herd it's bad to stay up all night before a test. The midterm is about 10% of my grade what do i do?