Mid-Cycle Bleeding HELP

I’ve never had ovulation bleeding before. I had a chemical pregnancy in July. In August my period went on as usual around the regular time. On CD14 I was supposed to ovulate - not 100% in this because I don’t test. I usually just watch my CM. I started seeing EWCM on the CD7. On CD16 I had light pink spotting only seen when I peed. On CD17 I had more brown AND pink spotting with tiny red dots. On CD18 it was practically gone til this evening and I noticed bright red and a little larger of clots. Largest being maybe twice the size of my pinky nail. Can someone console me on this? I’ve never experienced this before. How long does it last?