Hi , My Doctor Prescribed Duphaston For 7 Days To

Hi , my doctor prescribed duphaston for 7 days to induce menstration, however its been 8 days since I had my last tablet and still no period except pinkish discharge for about 5 days now. Is this normal? I'm sure I'm not pregnant since I had a scan before i was given this medication. How long is the regular time frame to get your period after taking duphaston? Thanks