Hi Doc, I Took Postinor2 (levonorgestrel 0.75mg Tablet) On The

Hi Doc,
I took Postinor2 (levonorgestrel 0.75mg tablet) on the 7th of October, 2015. I took it according to the direction it should be taken
( I took the first tablet the second tablet was taken 12hours after).I start having irregular period (light) on the 12th of October,2015.I felt as if I was going through my menstrual but the feeling was "Light" why I concern is because I took a 150mg Diflucan(po stet) on the 10th of October,2015 which was in the night. So I am considering if it as an impact why I am having irregular period.