implant

This is going to sound so silly but I'm really freaking. Me and my boyfriend are 17, finally getting our lives on track with apprenticeships and that and I'm on the implant. Had my first period on it in the 6 months, I thought it had stopped so we had sex, the next day it was back (how freaking annoying is that girls?) anyway is there a possibility I could get pregnant? Idk I'm probably being stupid. It's implanon btw.