Things I discovered:
The stress problem was due to having almost zero social contact for three weeks (I thought the schoolwork was bothering me--but no, it was the lack of people. WTF, brain). Now socializing is on the list of required daily activities, right under "sleeping at least 7 hours," "eating food whenever hungry," and "inhaling oxygen."
Man, I hate my brain sometimes. It didn't tell me I was lonely (I
still don't feel lonely, or even remember feeling that way); it just hit the panic button some kajillion times and suddenly made everything suck. It also informed me that I really, really didn't want to socialize with anyone when I was so stressed out >_> Good job, brain.
I'll likely get back to playing a few games of Mafia once I have some idea of how to work my schedule, in other words. For now, I have to make sure I can get enough socializing done in real life to keep me from going insane again.
Finally, a therapist can help.
Yeah--I went in for emergency counseling yesterday, but in general my parents are
extremely anti-therapist. When I went last year, they made fun of me and tried to bully me into quitting every time I finished a session. There's a reason why they'll never know what I ended up diagnosed with >_> It's... not a pretty situation.
I'll go if I need to, of course, and I have someone I'll be seeing in three weeks or so in hopes of learning how to stop being so freaking paranoid, and how to make some friends. Any more than the 5 free university counseling sessions, though, and I'd have to spill the beans to my parents--so hopefully I'll be mostly better by the end of that.