Weird clot?

I'm not sure what this could be? The thin part was hard (not super hard but more stiff compared to the rest).

I had my period on the 11th and it ended completely on the 19th, though it was tapering off before that. This morning I woke up to some pretty decent sized clots when I stood up. This was from the afternoon. Is it just a normal clot? And why would I have had my period and then started it again not even a week later? **Reposting because I posted pretty late and it got lost in the sea of posts**