Hi, My last intercourse was September 6. I got 2 periods after that on September 20 , and October 16. On November 1st I had brown spotting that lasted for about 3 days then it stopped. My period was due November 12, but it didn t start. I thought I was pregnant, and I did an ultrasound my uterus was empty. Blood test results came negative as well. And I did two home pregnancy tests both showed negative. All my results came normal no infection or any other problems. So my doc prescribed Primolut Nor 10 mg , twice a day for 5 days. Is this the right medication for my case?