I Need Help

I've known I'm bi and gender fluid for around a year now, but I'm too scared to come out to my family. It's not that I don't feel safe around them, they're the furthest thing from homophobic. But how do you tell the people who thought that they knew you best, that you're not that same person? I'm losing sleep and it's getting hard for me to focus on things. I want to tell them, but I'm scared.

I HATE myself for being scared. Nicole Maines, my personal hero, went to court to fight for her rights when she was only in the fifth grade, and I can't even come out. I feel like I'm on the verge of tears almost every second of every day. I want to tell them before pride month ends, I just don't know how.

Please help me...