So I had a normal 6 day period starting on may 7th then I ovulated between the 15 and the 20 and had sex during that time. Then I was due to start on the 8th of June On the 11th of jJune I got brown discharge that lasted about 5 days. I took a pregnancy test on the 15th and it was negative. So I assumed it was a period. But then I had sex during ovulation time in June around the 20th.on the 1st and second of Julyhad light cramps but no bbleeding. Could that have not been a period? Could it have been implantation?