27 weeks, bleeding?? HELP!!!

I was taking a shower tonight and this came out of me. It’s a chunk of something? Possibly blood and tissue?? Not sure. Does anyone know what this could be??? I’m 27 weeks pregnant. I put on a pad to see if anything else comes out… baby is very active, no cramping. I haven’t had ANY bleeding or spotting AT ALL this pregnancy. I did have a miscarriage 2 years ago, very early on.