A little weird and confused

So AF is due tomorrow and I’ve been having mild cramps come and go, however, I normally don’t have CM just before my period but this month I’ve had a lot! In fact I just went to the toilet for a wee and CM was actually coming out of me so much it was dropping into the water - sorry if that’s TMI!

Can anyone shed some light as to why there’s so much CM or as to why my CM has changed this month?