Late with question

Nicole
Today makes me officially late if I ovulated when glow says I did and three days late if I ovulated when I think I did according to cm. I was having cramps for about a week before af was due but they've stopped for the most part now. Test yesterday said negative and I haven't taken one today.
​My question is, I've had a lot of really thick, white cm for a few days (kind of chunkyish) and my cervix feels low and open but soft. Am I out because I think it feels open? I think it's felt open for a couple of days now 

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