Nexplanon and pregnancy!

Hey there! So I’m on nexplanon, and I know it’s over 99% effective. However, I still worry all the time that I’m going to get pregnant! Today one of my friends told me she used to be on it and she got pregnant from while she was on it but miscarried, this made me even more anxious about that being a possibility for me and being one of the few to get pregnant at the less than one percent! Any tips on how to not be so anxious and worried about getting pregnant, especially when you’re on a highly effective birth control method?? 🥺💕