WARNING - graphic/tmi

I am 18 weeks pregnant and when I just went to pee, I felt something come out and ended up going back into the toilet to pick it up...prob one of the grossest things I’ve done tbh. And saw this. I know discharge is normal but the coloring and texture of this just seemed off and there was a little bit of blood around it. This is my 3rd pregnancy (first ended in early miscarriage) so I’ve always had a bit of anxiety when pregnant. Anyone else experience anything like this? (It can’t be the mucus of plug, can it be?)

Waiting to hear back from the on call but needless to say I don’t think I’ll be getting much rest until I can see my doctor