where do i go from here?

holidays have officially started (a week ago) and i'm home for a WHOLE month! how awesome is that! being away for like half a year, with a one week break in between, can take a huge toll on a person. all things considered i know i'm pretty spoilt. like i get my food cooked for me, i get my water boiled, i don't usually have to take public transport or even taxis and i don't have to do any household chores whatsoever!
being away from that is not the most fun thing in the world. i mean going away to boarding school was wonderful. although it didn't always feel that way at certain points in time. but overall i can gladly say i am super proud to be an ex-SMAGS student + boarder.
people always told me from like day 1 that i would LOVE, and i mean LOVE, uni and everything. but frankly, right now the L- word is the last word i would use as a description of my after-high school studies.
here's the problem though. i have no idea why i don't like uni. well.. maybe i do, kind of, but that reason is not exactly the kind which would totally and utterly put me off doing something.
i dunno. maybe it's because i'm doing a course that i don't exactly want to be doing and it was definitely NOT my first or even second choice. maybe it's because once done with my course i have no idea where to go from there. do i try and get into medicine or do i give up on that and go for dentistry. i mean if just getting into med is this hard do i honestly have the guts and the perseverance to get work my butt off through all the obstacles that have been put up to stop people from becoming doctors? will i even get into the course to start off with?
i know i want to become a doctor. if you ask me why i can't really answer that. i just want to. i really want to and i know i'll love it. kind of sounds stupid and childish when i say that but i can't help it. there's nothing else on earth that i would even consider doing. maybe dentistry but that's not really the same thing.
no one has any idea how many times i've played this conversation in my head. between me and well another part of me. i'm not the most optimistic person out there. i have no idea whether or not i will be able to succeed if i try.
do i just give up on that dream now while i'm ahead and switch to a course i'll despise but that will hopefully get me a slightly better job that sitting in a lab all day with rats?
of course my mum thinks i'll get in but there are three strikes against her so she's out. number 1. she's my mum so if she doesn't say that she'll be thrown in mummy jail. 2. she thought i'd get into med in adelaide but that didn't happen. 3. she can't exactly predict the future now can she?
whoa this conversation seriously spiraled way off course from the whole i'm home thing. i tend to do that ALOT. start off happy then talk myself down to this really sad and miserable phase.
but seriously.

WHAT HAPPENS NOW?