Also keep in mind the notable effect that (relevant) extracurricular activities has on your employability...
tl;dr It's not just your degree that gets you a job. Talk to people and do stuff in your field as an undergrad and you'll more than likely give yourself an edge later down the track.
I wouldn't just say relevant extracurriculars - being president of a club and keeping a good GPA reflects better on someone as opposed to someone who just keeps a good GPA. Even having a part time job is important as a bit of work experience (although don't work 30 hours a week and let it get in the way of uni, etc, etc.)
But yeah, there's plenty of relevant stuff that you can do - both paid and unpaid. Keep an eye out for volunteering in relevant things (e.g. if you want to be a doctor, volunteer at the ambulance service, if you want to be a teacher, do one of the casual TA gigs,) and paid work (which can be a bit harder to find and get.) I know a couple of people who've gotten full-time jobs out of basic lab assistant jobs they did as an undergrad.
Okay they really need to start teaching you in school that you should expect to be at university for more than 3 years.
Literally this. Doubly so if you want to do anything research or health science related.