HI my LMP is January 18 2015 and cycle is usually 30 days and expected my periods february 16 th . I had taken flu vaccine and meningococcal vaccine during the first week of february . My periods dint come on 16 february and i took duphaston for 2 days to delay the period. today when i pee and wipes i can see i m bleeding but very lightly. Isthis because of taking medicine. How can i get normal flow? please advice