I failed physics twice. I got a worse grade the second time because I missed the drop date. I thought it was on Monday, but it was the previous Friday. They had zero sympathy. Had a calculus teacher who'd write an equation on the board in front of her, that we couldn't see, and then she'd erase it before turning around. And then she didn't believe us when we complained! I got a free three year tour of the military base. Uncle Sam never sent me a thank you note. Ungrateful -blam!-. Hang in there.