What does this mean?

Af ended 5 days ago. I am on CD 12, my cervix is soft and open...how can I tell if its high or low? And what does it mean? Should I BD tonight or wait? <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> says I ovulate in 8 days...First time tracking this kinda stuff..my first pregnancy has an awful story behind it...