I also think it's just gradually gotten worse with time, which is why I never bothered to remember before. Lemme give what I do know in a simpler form for me:
-Feeling depressed since around...~3 days before Christmas. No matter the time of day, if I'm just at home, I feel like crap. Even when I have something to do, I've just had no...gung-ho to go really do anything. I used to have semi-frequent times where I'd leave the house, but now I just remain cooped up in my room or the living room. Every time I get invited to be dragged along somewhere, I refuse. Heck, I didn't even feel like going to my dad's for this period of time as well, and normally I'm enthusastic about this sorta thing.
-Mood swings whenever someone talks to me. Except it's always the same thing. It's never from happy to sad or sad to happy, it's always sad/happy to angry. And I never, ever want to talk to anyone these days. In person, that is.
-Whenever I'm not doing something, I feel sleepy or sad. Never really enthusastic or excited unless it's stuff just about anyone would be estatic about - like seeing your girlfriend. Don't really laugh when watching those comedy movies I love so much, at most just dry chuckles. Some days I feel in a laughing mood, but that's once in a blue moon.
-Even when I'm here lately ( last couple of weeks ), the mood sinks right back in. The 3 days developing Kestel for WotS were riddled here and there with small pauses, but come time to make Bloodhound, that whole week I didn't feel like doing anything except moping around. Hell, even with Candice logged on today, I still had the same "meh" train of thought rather than get all hyped up like usual. This one actually does stick out because this is the place where I relax, where I told to people, where I joke, where I actually have friends, yet even here I can feel shitty.
-Been interfering with homework too. I can still get it done, but it takes me longer than usual or sometimes I just don't get it done for a good...month or so. Same applies for classwork in some of my less interesting classes, which are also ironically the ones with lightest amount of work.
-Loss of apitite. This one's been a bit on-and-off for a good while, but more often then naught I've been having a pretty small stomach. Usually you guys have multiple dishes for dinner, right? Not so for me lately. Just cook a small, medium-rare piece of steak and that's it for me. Brocolli/potatoes/etc. you can just forget about because I won't even bother to touch them, and the first plate is the last plate. Also, there are lots of days I don't get breakfast or lunch from school, and not just because of lack of things to eat that I like.
No events to really note that could be bringing me much stress aside from good ol' school. I eat semi-properly, drink lots of water, and get my sleep.
Alright...I'm done ranting. Say something if you like, I don't even really care. Say I should get checked out, say this is normal and why teenage years suck. This was just to...ah heck, I dunno why I'm even doing this. Whatever. :I