Regestrone is progesterone
& is usually given to postpone the periods. It is safe & yes you can continue it for another week. Mild side effects are nausea, loss of appetite, abdominal bloating
, stomach cramps
sedation, headache &mood changes. Alcohol should preferably be avoided with Regestrone because alcohol is an enzyme inducer & can increase the metabolism
of Regestrone resulting in reduced action of this drug.