Can Deviry Tablets Prescribed After A Negative Pregnancy Test Affect The Baby If A Positive Test Was Later Detected?

Hlo. My question is regarding Deviry tablets effect on pregnant/ foetus. As it happened my wife got pregancy test done on 16/04 which was negative. Then Doc prescribed 5 day course of Deviry tablets. On 28 we again did the pregnancy test which was positive . Her last period was on 5/03 . How could this effect our baby and what could be done at this stage?