nausea during ovulation

Glow says I began my fertile window today *yay* 😊 but for the last two days I have had windows of nausea and a warm feeling in my cheeks. I am now on cd 12. I have been off of birth control since October and I think my cycle has finally started to regulate back to normal this last month. I have felt fine otherwise so I don't think I am sick. Has anyone else experienced this around ovulation?  Thanks!