July 31 2012 I got the implanon removed I had it for 3years four days after I got it removed I had unprotected sex on Aug the 25 I had my period it started with just spots of blood the next day the flow picked up just a little bit it stayed on for 4 days my period usually starts heavy and then get light and last for 6 to 7 days I took a pregnancy test and it came back negative.. I experience mild cramps on and off should I do do you think it was a period or do you think it was implantation bleeding