CM Confusion

We're TTC, and im getting to the point to take ovulation tests frequently, and check my CM. I was in the bathroom and there was A LOT of egg white CM.... So I took a test (NEGATIVE) and wiped. All the CM was gone, so I checked inside and my CM was a little more chunky and definitely not 'eggwhite' . Im not supposed to ovulate for another week.

I started taking Letrozole this cycle.

Could this have been from sex two days ago ?