Implantation or not?

Hey guys! So I took an ovulation test on August 12th and it was positive. This past Monday I expierenced VERY light bleeding that lasted maybe an hour tops. It went away. AF is due this Saturday or so. I have taken a pregnancy test today and it was negative... Do you think I expierenced implantation bleeding or just something different. Monday was about 6-9 days after i showed positive for my ovulation.