What?!

Kali • Newly married, may 2105. Suffered a natural miscarriage August 2nd, 2015, baby girl due May 2016!
Had a natural m/c a week ago. It was very early and my levels had already dropped to zero. I started ovulation sticks after I stopped bleeding and have been getting blank circles (not ovulating) today 8 days passed, I got a solid(ovulation) is this possible so quickly after an early m/c??