i was taking regestrone to postpone my periods as suggested by doctor. my date was on 4th june and i started taking the pills (1 every day) till 4th and on 5 th me and my partner had an unsafe sex and i took ipill late evening but my periods are delayed and i also went for preganew test which was negitive.. pls advise can be pergnent anyways and if not than what should i do to get my periods....