it's possible for anyone to feel down for no reason anytime anywhere. But the main thing to remember is that whatever you're dealing with, will soon pass. There's no reason why depression should get the better of you when you think positively. And besides that, you've got your friends to rely on. Real friends always make the effort to support each other, so it won't be a bad thing to let them know about what you're currently going through.Being able to talk about your problems is the biggest, most important step to recovery.
Good luck and i hope things go well. I'll be here if you wanna rant or if you just need a friend.
i won't judge.