I have tried sex in August according to my ovulation days. I have missed my due date of periods by a day now. I usually have it on my due date or a day before with a lot of pain in my lower abdomen. Suddenly today evening I saw few spots of blood discharge and I am really tensed.. I have not felt my usual periods cramps ... I am trying for a baby.. did it fail this time or should I wait for few more days before taking a pregnancy test? Please advise.