How to deal with the pressure??? Please help.?

I am biual. I always knew that I liked girls when I was a little girl. I even had a girlfriend. Growing up I dated guys and now I'm dating a female who I love very much. It's just that I feel like I'm living a double life because I haven't told my mother. My mother is not only an black woman, but she also Christian and Jamaican. So I kinda have 3 strikes against me. I dont think she will stop speaking to me but I fear our relationship will change after she finds out. Plus, this is the first female I've dated since childhood so I'm starting to feel the pressure that a couple can face just for loving eachother. This is all very new to me and my girl is sooo supportive. I recognize the hatred that a lot of ppl have towards s and it saddens me. It saddens me to think that someone is so disgusted by who I love that they dont want their child around me. If anyone can help that has maybe dealt with this already it would be greatly appreciated. I just need some advice, or tell me how you dealt with it.