Don't feel bad about posting here! That's what the forum is for.
I'm sorry you're feeling depressed. It's especially frustrating when family members don't believe in depression--I hide my condition from my in-laws because they are the same way. (They would probably tell me I need to pray more).
I've found everyone here to be very supportive; take advantage of the forums!
And if you can't get professional help before the summer is over, go to your college's counseling center as soon as you can.