Thanks for the query.Isotroin
belongs to category X drug in pregnancy
according to FDA.
So the possibility of fetal risk is there.
As you used only few tablets if you want you can continue the pregnancy with regular antenatal checkups and ultrasound
Mainly early pregnancy scan and TIFFA scan are important to exclude any possible anomaly at the earliest.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429