Hi thanks for your question
Mesovit plus is herbal product made up of multiple herbs
It is used to regularize menstrual cycle
Neither it is emergency contraceptive pill
Side effects of herbal products are not well studied.
Being a herbal product hopefully will not affect the fetus
However you should remain under the regular antenatal of gynecologist ,who will monitor the fetus for any congenital defect.
Hope I answered your question