What kind of cm did you have when you found out you were pregnant?

I’m currently 8 days late and now having heavy creamy cm. I’ve had a reallyyyy bad headache for like 4 days now, nausea, a strong sense of smell, weird cramps that come and go, just tired all the time, extremely sore boobs and sensitive nipples. But i had a negative test a few days ago. Could i be pregnant even though i had a negative test? Is it possible i ovulated later than usual?