Thick cm?

This is on my mind as a what the moment? 
2 days ago I went to the loo at work and I had heaps of CM including a large noticeable amount in my underwear. It was thick and my undies were drenched from it. 
I had light pain the morning but I just assumed that was muscle soreness from weighted front squats the day before. I have a paperless job so I sit at the computer a lot. So I just put the light cramping down to that and then I get this surprise in the bathroom.
That was cd 11.