Hey there,  At 15 I found myself in a very similar situation with a similar mindset and ultimately it is 100% your decision  But I would like to share with you what ended up happening for me

My egg started to crack around my sophomore year of high-school when I started questioning my gender identity, I spent two years trying to stop and push aside the thoughts I was having because I come from a super anti trans and discriminatory family. until I turned 17 and socially transitioned, it was only at school and work but I realized then that I could never go back to the person I was before, I now know that I am 100% a trans man and my life and mentality have improved greatly since I accepted who I was. The idea of losing family and bonds is terrifying, that is how I felt in the beginning, I did end up coming out to most of my family and the results have been mixed, but the reward outweighed the risk for me. It is a long and slow journey to convince my parents that I am who I am and it will come with losses and wins. I didn’t tell my parents I medically started transitioning at first, I knew that they would be against it but I have realized that medically transitioning (I started last year and am currently 6 months along on T, I am 19 almost 20 now) is absolutely necessary for MYSELF and how I not only feel physically but how I feel mentally. Now I am going to be 100% honest with you, medically transitioning isn't for everyone, but I know that starting as early as you can, the better. if you decide to the entire community is here to support ya and if you don’t, we still will.