I had sex on last day of my periods and took ipii the very next day I had withdrawal bleeding after 10 days and didn't get periods till now like it has been 3 months I have done 6 pregnancy test in all these 3 months all of them are negative and even visited a gone but couldn't share about my sex as she was my family doctor but she gave me medicine for inducing periods norethisterone and I took it for 5 days. Today is the 7 th day but didn't get my periods yet. What's wrong? Please help.