Rod or Condom

Eve
Me and my boyfriend have sex quite often and there have been a few times where I could sworn I was pregnant. I'm comfortable using condoms and then not when I'm on my period but he wants me to get the Rod. Personally I'm quite nervous about it if I were to get it done because I'm still living with my parents and they don't encourage me have sex cause they are Christian. I do want to be an individual but I don't know if I'm ready for the Rod. I'm just feeling a bit of pressure from him cause he said "I don't wanna be wearing a condom till I'm 27 and ready to have kids". But I do think it's a wise idea as we have unprotected sex quite often. Thoughts? Can anyone give me some advice as I'm 18 and need to start making decisions like these.
Thank you x 😊