starting birth control (pill or implant)

im 15/16 and things have started to become sexual between me and my boyfriend and i'm thinking about going on the pill or getting the implant, but 1. idk how to start to coversation with my mum or what to say if I text her and 2. I'm lowkey scared to go on birth control, bc as much as periods are annoying it's regularity and I feel like I'm growing up if I use birth control.

but that aside, does anyone have any tips regarding birth control in general and can anyone help me to figure out what to text her (I was planning on texting her when I'm at school, it's less awkward imo)

thanks.