What's going on in my body?!

Okay, here's my schedule according to Glow.

For the last week, I've had random nausea, though yesterday night was the only time I came close to vomiting. I am currently nauseated.

I have sharp cramping in my left side about where my ovarie is, I think. That's been on and off all week, but consistent throughout today so far.

I'm very tired most of the time (but, really, who isn't?!).

I had my Skyla IUD removed last month, so my period is still regulating.

Took a First Response test this morning and got a BFN.

I have clear/cloudy egg white CM, even though I've all ready ovulated, according to Glow.

What is going on?!