So I stopped taking birth control in August and started TTC right away. My AF has always been regular, 28 day cycle and lasting 5 daysish. I was expecting AF sept 15 but she showed up the 12th. But the thing is, it only lasted 2 days. Pretty heavy on the first day (I needed a tampon) and then very light on the second day. Any chance this could've been implantation bleeding?? Or just my period trying to get back on track? Anyone else have a similar situation?