Low OPK with EWCM

So I have a lot a lot of EWCM, like I feel slimy even after going to the bathroom and wiping (sorry if TMI) but I’m on CD 15 and I’m still getting a low test reading. I’m so confused and worried I’m not going to ovulate this month😞 is it normal to get EWCM days before ovulation? I shouldn’t be freaking out about this, I usually ovulate on day 18-19🤦‍♀️