You can do online research into medicine, read peoples work experience findings, go and volunteer in care homes, and so on, and know what the job reality entails and the challenges.
To the people that doubt you or think they can tell you who you are, to hell with them. You define yourself after thorough research and honest self evaluation.
People told me medicine may not be for me after having some unfavourable things and not making it into medicine the first time. That motivated me even more and i got into the best possible university , and did even better the second time round.
If these are the only words you remember , then my mission is fulfilled: Don't let anyones idea of you become your reality. You define yourself.
As for the W/E really do make a strong effort to try to get some in your town/or a closeby town. You need to phone them, send letters well in advance.
I took a gap year btw.