Confused

Laura • Been together almost two years, married one year, passively TTC about 6 months but only two months actively TTC
So this month I thought we were good- everything lined up, ovulation test was positive on day after sexual activity and we did it again that night. "Period" came but only for one day so I thought maybe implantation?  Then today I had a fleshy ball with tiny bit of blood come out... I'm wondering if implantation failed?  Or what else could that be?