It's hard to say. First Year science degrees are made such that you're allowed to choose a diverse range of courses in your first year, slowly narrowing it to your intended major study.
The best way to decide is to look for the career opportunities.
If you wish to become a researcher in Psychology, perhaps assisting in Neuroscience research in your future or to jump into being a certified Psychologist.
Or, perhaps you're into the real hard sciences. If you're really inspired into say making the next Anti-viral drug, or want to work in laboratories, figuring out why our Immune system is as it is, then Biology is the way to go. In BIOS1101, you'll get to dissect a frog + rat, kind of cool, but I'm not a real anatomy-based person.
I heard from fellow students that Psych, the main objectives are Essays and at the end a 100-150 based multiple choice exam.
As for whether you're 'screwed or not', lol, its only Week 11 or 12 now...so still alot of time to study.