Miscarriage or just a blood clot?

Ashley

So I just had my son 6 months ago today and I had normal postpartum bleeding. After this I got my period 2 times that lasted a bit longer but didn’t hurt too much. I haven’t had a period since mid March and started taking the pill in the end of January. I had taken a few pregnancy tests that came up negative. I’m not sure if the pill would effect the test like that. I started bleeding a few days ago but have had really bad cramping since, I usually only cramp the 1st day. Tonight I went to the bathroom and this came out. It’s fairly firm and not like any blood clot I’ve had before. It’s also more of a flesh color with blood on it rather than completely red. Does anybody know what this could be?