I was 14 weeks.... I used a strainer on the toilet.
I only had one "piece" of something that was grey. And I have no idea what the heck it was. It was after two days of heavy bleeding and HUGE clots...Like grapefruits. It was about four inches long and two inches wide. I almost took a pic of it(EWWW) I figured it was part of the placenta. I had horrible contractions for about half an hour before it "passed". They felt like the contractions I had before my water broke. Other than that I only saw bright red blood and purple clots. My biggest clot was the size of a cantalope (sp?) I actually was fasicnated by that one. It was huge. That was the only grey I saw.