Akhi22
Hey Akhi22,
That's great to hear that you are interested in med! Your friends are correct in SOME way that chemistry is quite important, in that chemistry is usually known as the "central science". Additionally, it does scale pretty high so it does help you in the ATAR aspect too. In some universities such as JCU, it is even a subject pre-requisite for you to have completed chemistry. However, most unis DO NOT require chemistry knowledge and ONLY require you to have completed English such as UQ or Griffith [assumed knowledge is: Mathematical Methods (Units 3&4, C); One of Biology, Chemistry, Physics (Units 3&4, C)].
So what I am trying to say is that if you didn't do chemistry and you have no option to do it now, I don't think there is any reason for you to stress. As someone who graduated only two years ago and going through medical science right now, they teach chemistry in uni from the ground up (just at a faster rate) so there is nothing to worry at all. Right now, UCAT and ATAR should be your biggest worries for you to get into med.
TLDR: Chemistry would have been beneficial if you did it BUT you still have an equal chance as anyone to get into med.
Let us know if you have any more questions and hope that helps!!