Worried... what is this. (Pics TMI Warning)

I had mirena removed 3/4... no issues until 3/19 when I began spotting and cramping horribly I thought it was my period but last night when going to the restroom to pee in felt 3 large clumps hit the toilet and then again this morning and a little while ago I decided to collect it and it seems like giant clots. Could this be my actual period or should be worried? Hubby and I BD'D right after mirena was removed. Could It be a miscarriage?