Weird thing in toilet

Okay, so I went to pee and when I wiped, nothing unusual was on the toilet paper, but when I went to flush, I saw this weird flesh colored thing in the toilet. No blood. Just this. I thought maybe my husband had pooped and not flushed properly, but he said he hadn't, so I have no clue what this could be. I've been having bad SPD pain, but nothing out of the ordinary. Is it just weird discharge? Should I go to the doctor? I don't have an appointment until this coming up Thursday. The dark marks in the bottom of the toilet are like stains or rust or something. Nothing cleans it out.