Odd CM, 3 days late

So, the day my period was due, I thought for sure that it had shown up. Only to go to the bathroom and find white mucous. That continued for 2 1/2 days. Just a little while ago, I went to the bathroom and happened to look down into the toilet to see what looked like sand. I figured maybe it was in the toilet before I peed and didn’t think anything of it. Just now, I went to pee again and made sure to check that the porcelain throne was pearly white before even sitting down. Yet again, I see the sandy looking stuff and my discharge is now a light rusty brown color.

Any thoughts?