Thanks for the query.
belongs to category C drug in pregnancy
. It should be used only when the benefits over weigh the risks.
Anyhow according studies no harm reported with limited use of these drugs during the first trimester.
So you continue the pregnancy with regular antenatal checkups and ultrasound
TIFFA scan is needed at around 22 weeks.
Vaginal inserts usually will not cause much harm as they will bypass the systemic absorption.