I always get even more depressed after a great night out, do more depressed people have this? is it like a typical depression?

Is alcohol a big: part of your great night out? If so, remember that alcohol is ultimately a depressant. If the night out has you missing sleep or quarreling w/housemates that can also do it. I see that your history says you don't drink. Are drugs involved? Ruling out the above, this may be a wake up call to makes changes in the rest of your life where possible. Peace and good health.

Yes: Good question. You are probably bolstered by friends, surroundings after a great night out which counteracts negative thinking and feelings common to depression. For more info on depression, talking to parents and getting help, see: https://secure02.kidshealth.org/teen/your_mind/mental_health/depression.html# All the best.