Has anyone had this before?

Hi everyone.

Maybe tmi, sorry

Ive always tryed to track cm but found that i couldnt find a change in texture or amount whatever time of the month and have never really had a whole lot. This week for the very first time ive had what i assume is eggwhite cm its still not clear more murky but its very strechy and i can visably see it when i wipe which i have never been able too. Been about 4 days in a row now. My question is why would i just out of the blue get this when ive never had it? Ive done nothing different and eaten everything the same. Just curious. Has anyone had this? Or know what could make it happen all of a sudden.