Talking about It

Hey i remember being sexually assaulted a the young age of 5 & i have never spoken about until i got with my daughters father who i am currently still in a relationship. I’m now 27 years old but my family still doesn’t know anything about. I come from a family who didn’t talk about sex but now that i am a mom i want to be vocal about what happened to me and how to teach my daughter about sex. So does anyone have any suggestions on how to finally tell my family i was sexually abuse? What age she i start talking to my child about sex? & how?