confused on what to do next...

my boyfriend and i have been talking about sex for quite a while and i told my mom i wanted to get on birth control because i would never have unprotected sex at my age. anyways my mom said she would get me to the doctors to get me out on birth control. she hasn’t told me she made the appointment or anything, and i don’t know if i should start a conversation with her about birth control again and setting me an appointment, but she’s very supportive of my decisions and is there for me. if anyone has suggestions on what i should do next please let me know. and how i should start the conversation, because i suck at that. thank you!