I'm surprised they have you on Suboxone
and not Subutex (Suboxone
contains buprenorphine and Naloxone. Because Naloxone can sometimes cause symptoms of opiate withdrawal, which could cause miscarriage, pregnant women are normally advised to take Subutex - exactly the same as Suboxone, but without Naloxone, instead.)
Either way, at present, Buprenorphine is listed as a category C drug for use during pregnancy.