Period supposed to come on 6/9. i had sex on 28/8 and 5/9. experienced very little bleeding on 6/9 and 7/9, more like stain. what's wrong?

Pregnant?: If you had abnormally light periods in June and July and no period in Aug. or September you could be pregnant. Start with a pregnancy test. If it is negative you need to see a doctor to look into the other things that can cause this.

Not enough details: We would need to know more details about your cycle history, stress levels. recent traumatic events etc. You have probably done a pregnancy test and that is negative.