Not a male nurse, BUT I can sympathize with your situation. So let me offer you some advice that helped me along the way.
I think and I know that it is extremely difficult to try and pursue something when you have no support from your loved ones. When I first told my loved ones at the time, that I wanted to become a nurse, I was met with a series of the following responses: "why do you want to do that?...You know you're going to be working as a peon, scut work?...But you're so smart and talented, why don't you become a doctor, that's what we had envisioned for you?...". My boyfriend at the time had the audacity to try and convince me to switch my career choice because he had envisioned marrying a doctor, his sister was a nurse and he said "I'm sure she now regrets becoming a nurse instead of going to med school".
Everyone is quick to offer their opinions when it goes against their vision, their hopes, and their beliefs without a single thought of how it could impact the other person. So what I'm getting at is, if this is truly what you want to do, then go for it. The only person that has to deal with the choices and consequences is you. No one can live your life for you except for you. You have to not only be happy, but passionate about your career choice. Your passion will see you through school and the duration of your career. Follow your passion and success will follow.
Since your family isn't supportive of your decision, make sure your external support system is strong (friends, teachers, etc), you will lean on them more than ever before, during, and after nursing school
. Maybe one day your family will come around like mine did. You have a dream, just maintain your tenacity and push through it!
Good luck and all the best dear!