Thanks for the query.
After taking progesterone tablets
for withdrawal bleeding possibly in 5 to 7 days withdrawal bleeding will occur.
So the delay in your case could be because of:
, though there are no symptoms we cannot exclude the pregnancy till the confirmatory test comes negative.
Both estogen and progesterone imbalance.
So you once undergo blood test
If that comes negative consult your doctor to find out the possible cause, if needed again you may need to start yasmin for regularization of cycles.