naesous during ovulation

Lauren
I had a mc in April and husband I are TTC again. 
Glow says I started ovulation yesterday but my ovulation tests come back negative. 
For the past week or so I've been noticing changes with my body. One morning last week I felt very naesous for about an hour. Then I had 4 days of straight headaches. And just now I got sick and threw up after feeling naesous and bloated all night. 
Any insight???