Skin like tissue

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I’m 10w5d today and I started having tan mixed in with my discharge. I also passed very very small tan pieces that look like little chunks of skin. No big clumps, no bleeding. I’m also feeling some tightness today in my uterus (maybe round ligament pain or stretching out since I know baby is getting a lot bigger now). I spotted and had a lot of brown discharge early pregnancy and it turned out fine and I haven’t had anything in a while up until today and I’m just nervous. Anyone have something like this?