Is this normal?

Nicola • Married. 29 years old. Mmc at 11 weeks July 2015 and mc at 4+3 weeks Nov 2015. Pregnant with baby girl due 30.07.17 ♡♡
I normally ovulate between cd18-23 but I'm on cd13 and got a high fertility on a clear blue digital ovulation test today. I had a chemical pregnancy a few weeks ago...could this be why? Glow says I'm not due to ovulate until early next week so I'm confused? Should I bd? Xxx