Okay so my last period was the 11th July 2013 and it only lasted for a couple of days. Then I calculated when my next period should have been and it was the 8th August 2013, I never had a period on this day but have had cramps, then on the 11th July in the afternoon I noticed redish/pinkish blood. My periods haven't been regular for nearly a year since I had my implant out. I don't use contraception as me and my partner have been trying for a baby for awhile now. Is this my period starting or is it implanation bleeding?