hello and welcome to the forum,
thanks for the consultation,
you have got amenorrhoea since one month., presently you have duphaston
10mg for 5 days for withdrawal bleeding, and you are waiting since 2 days.
for withdrawal bleeding you should at least wait for ten days.
duphaston has no bad effect on pregnancy
if it is present. so do go for an USG if there is no withdrawal bleeding with in 10 days.
take care and follow the instructions of your doctor.