Lumpy CM!?

[Finklelead]

12 DPO, AF due Thursday. The CM started about five days ago. At first it resembled OV mucus- stringy, stretchy, white but that would have made OV a week late and I was certain I'd already OV'd the week before when it was due because I had the usual OV pains and stretchy mucus then... It hasn't stopped since. It's not there every time I wipe but it is most times and occasionally in my underwear too and now it's thicker and lumpy. I don't have any other symptoms- burning, itching etc and it's not smelly. It's like bogies TBH. White in colour, sometimes it comes out as a ball and other times stringy but always very very thick, it holds its shape also... It's pretty gross and I don't think I've ever had anything like it before.

Could it be pregnancy or something else? Google pretty much comes up empty, just mentions mucus plug which it does resemble actually but much smaller quantities and white rather than yellow. I won't test until Saturday morning if AF doesn't arrive just so I can be confident in the result. Have had stabbing pains on and off in my left breast today but other than that, no other symptoms. Thanks.