My last period was on 27th April. I was physically intimate with my partner on 8th May, where he penetrated but didn't ejaculated. He ejaculated only after wearing condom. To be on safe side, I took an unwanted 72. Today is day 21 of my cycle and I was having abdominal pain, breast tenderness and I am having light bleeding than usual period. My cycle date has to be 25th May but it has arrived early