Hey,
I'm currently a medical student going into my 3rd year. I can tell you this confidently that a lot of my peers and myself included have faced many questions like this to ourselves. It can sometimes be a constant ongoing battle with yourself to decide if this is something you want to commit to. It is many years of your life, that you will be committing to Medicine and whilst the training pathway is long and strenuous there is no doubt it is also one of the most rewarding pathways one can choose.
Most importantly, this question is very subjective and I recommend you reflect on what it is you want from your career in life and decide if medicine will do that for you.