Obviously don't trust our answers as the truth. However... I'm feeling the same (one minute exited, optimistic, inspired) the next negative, (miserable, feeling a bit dead, just want to sleep, don't want to bother with life etc). I don't think it's depression. Just that going to university is a massive change and we have high expectations while also pretty scared, which is why we're thinking about things a lot that we'd usually disregard because we feel this is finally the time to finally put what once have bothered us slightly into action. At school it's a magical bubble of homework and safety and now we're having to face ourselves. So yeah it's going to be emotional, but I wouldn't label yourself as depressed unless it prevents you from living normally. I don't really think any time we go through a rough time with our mind we should put a sticker of 'depressed' on it. There's depression, and then there's depression.