See the charm of PCMB combination is that the student have many options to go for. For example, if you feel at some moment that you want to do Engineering then also you will have option in your in PCMB combination. Now if you are solely determined that you are interested in the Medical field, then PCB is the great option for you. But let me say you, while solving physics problems, the condition of having Mathematics will help you in much ways such as for Coordinate problem or calculus related operations in Physics. So having Mathematics can beneficial for you in multiple dimension. Now if you are frightened of Mathematics or you don't like it, then no need to take it. But if you are ok to have Mathematics then go for it, it will add more opportunities to your career ahead.

For career options after PCMB consider the link provided below:

https://www.careers360.com/careers/articles/career-options-after-12th-science-pcmb-counar

I hope this helps. Wish you a great day!