Latest you can ovulate after a positive OPK?

I always get a positive opk on CD14. I have some EWCM that day, and the couple days leading up to it, but I usually have MORE EWCM 3-4 days after I get a positive opk. For instance, I’m on CD17 today and have an abundance of EWCM. Should I keep BD’ing, or have I definitely already ovulated?