are these just normal clots?

This is my 3 Rd month ttc. My LMP was October 7 through October 8 th. Then on October 21 st I started bleeding again. My 2 nd period in a month. With a lot of these little black clots. Could it mean anything Miscarriage, PCOS, uterine fibroids? It says my period should of started on November 11 or 12. Kinda freaked out because I never had these.