The evaluation done by your gynaec is correct. The cariac activity,fetal pole
should be present by 6-7 weeks. That why your doctor has asked you to visit after few days ,by which you will be 6 weeks, when she will repeat the scan. Ideally the reports that you had,isnt good,because the yolk sac
should have been seen by now. If the report shows the same next week also then its possible your pregnancy
will not be viable. Take the duphaston
as advised. Hopefully the next scan will show some improvement.