Career options: medicine or different STEM job?

As you are sitting your GCSEs this year I don't think you necessarily need to be certain on what sort of career you want to have- I'm in year 13 and still don't know exactly what sort of job I want to end up with. Although I know this isn't very helpful advice, the best thing I can say is to just go with what you enjoy. If you are really interested in pursuing medicine, do it, and don't worry about the pay. You never know, by the time you actually come to get a job, the pay within this field may have changed.

This year, I'm doing my GCSEs, and I expect to score 9s in every subject (apart from Further Maths, which will probably receive 8). My decision to take Biology, Chemistry, Physics, and Mathematics for A-Levels has been made. I would say that I have a strong academic background in science, but maths requires more work for me because I'm not naturally gifted at it. Essentially, I'm attempting to decide which professions would be ideal for me. I've always wanted to pursue a career in medicine, but I've lately been informed that it isn't as financially rewarding as other STEM fields. If I were to follow medicine, I'd be eager to learn of any particular countries I should relocate to to acquire high earnings (I study in the UK). Germany/Switzerland, the UAE, or Singapore are on my mind right now. I'm aiming to become fluent in German and Japanese soon, although learning a new language isn't very difficult for me. Or should I consider biomedical engineering or a different STEM field?