Could Prolonged Usage Of Buprenorphine Contribute To Infertility?

hi, me and my partner have had unprotected sex for 8 months in search of conseiving a child with no luck? the only reason we can think of is that iv been on a prescribed dose of subutex/buprenorphine for 24 months, could this be a contributing factor leading to non conception? much help in this matter please as we have this is the first time we have asked for proffesional help, thanks jordan and michelle