Okay this is suuuuper TMI warning

I haven't had odd cycle behaviour in a while and nothing like this as far back as I can remember, previously cramping through my cycle, and pink spotting was pretty common due to PCOS, but hasn't happened in a while actually not at all since my miscarriage at 13w3d in July 2019. I will see GP of course maybe get an ultrasound. But the last few day's, my caesarean scar (2 caesareans for my premmie liveborn children) has been sore and my abdomen (I have severe abdominal adhesions from the caesareans yay ugh), typically this only happens around AF or if I over exert my abdominal muscles which neither has occured. We went out to grab pizza for dinner and I noticed cramping. Now, about 3-4hours later, I've gone to the restroom and I have extreme amounts of best described as old brown blood mixed in with egg white fertile cervical mucous and a small fleshy clot 🤢 I'm CD15. I'm a bit worried, I've never been diagnosed with anything other then PCOS but could this be a symptom of yet another crappy reproductive problem? Sucks as I was hoping to get lucky with hubby tonight 😂🙈