Should I tell my family I am gay?

Hey all,I am 15 years old and I am gay.I live in Turkey and being gay or lesbian is legal here but people are often homophobic.Family members are Muslim but they are modern like the majority in Istanbul but there are many homophobic people in Turkey.I don't know my family members are homophobic or not but I feel like I should tell I'm gay to my family.Maybe my mom and sister can understand but I don't think my father will understand me.Mom and father lives separate,maybe this is an advantage for me,I'm staying with my mom and sister.I'm afraid of they can reject me when I tell I'm gay.Should I do it? :(