TMI!!! Miscarriage at about 3-4 weeks??

Period was 4 days late this month. Trying to conceive baby no. 3 with my partner. Came on this morning assuming it was just my late period took a pregnancy test 2 days ago which came back negative and then this evening I went to the bathroom and saw this strange shaped clot in the toilet and this ‘plastic’ looking bit on the tissue, I’ve never had a miscarriage before, well not to my knowledge anyway. However some help from fellow Glow users would be much appreciated. I don’t want to be worrying over nothing😰

(Excuse the tampon and the very unclear pictures of course I was not expecting to see this when I got up)