Advice for no paid leave

Im doing a one month contract, i took half day off yesterday because i went for an interview, today i have no sleep at all and contempating whether i should provide an unpaid leave.

My job is not important, honestly i use my phone most the time, would it be okay to take the unpaid leave, cos ive been sleeping only three hours a night and idk if i can handle another day of no sleep cos today i didnt sleep at all