help! what is this? tmi photo!

So I had a miscarriage just over three weeks ago. I was 13 weeks but baby stopped growing between 6+7 weeks. I did a test a week ago and was vvvfl so presumed it was left over hormone. I'm pretty sure I ovulated a few days after as I got the mucus I always get when I ovulate. I'm not due to start a period for at least another 1-2 weeks as they say 4 weeks minimum after mc. But today I wiped and had this...