No AF but negative tests???

Kelsey

ovulated the 27th of December. BD the day of and every other day leading up to it. AF was due January 10th. That morning I woke up thinking I started but instead had a TON of clear stretchy CM and no AF. This morning woke up thinking I started but was just wet. However I'm still getting negative pregnancy tests? Is there a chance I am pregnant and just not enough in my urine yet?