Ovulated on 12th august, a week later i had period-like cramps for 3 days, period was due 28th and today had dark brown/red discharge, am i pregnant?

Cramps and menses: Im afraid we don't know anything about you and the likely hood you could be pregnant. It may be too early to tell. The best way to determine pregnancy at this early stage is by pregnancy test. The home test may not be sensitive enough to detect a small hormonal elevation in early gestation and you may need to see your doctor for a blood test.