Possible silent miscarriage?

So I usually get my period like clock work every month. But this month it was 9 days late. I am now on period day 4 which usually my flow is starting to lighten up but I am still super heavy and even passed a pretty solid clot. About marble sized and very tissue-y (rubbery like). I was having pretty uncomfortable cramps about 30 mins prior to passing that clot but otherwise Cramping was like my normal monthly cramps that come with my cycle. I’m wondering if this could have been a possible silent miscarriage.