Bleeding: implantation or period?

lily

Hi all!

A quick question: I finished my window of ovulation around 6 days ago (I was having unprotected sex during this time). 4 days ago, I have experienced bleeding (similar to my period), bloating, and strange cramps.

I have a very regular cycle typically, and cannot remember the last time I bled in the middle of my cycle. Can someone shed some light on this? My bleeding is not light but not super heavy and starts and stops.

Thank you!!