Ovulation after mc

Rebecca-da-wrecker • 🌈 👶 due June 2019 😍 with my little princess 💗👸

Hi ladies, so I had a mmc in January my first af returned on Feb 28th and producing negative hpt tests. I’m due to ovulate this week as I have 28 day cycles but my clear blue opk digital is showing blank circles still? I’m really confused 😐does anyone know why this could be? Xx