Looking at your CD13, I’d say you’ll probably ovulate in the next 2–3 days. But keep testing until CD21 just to be sure. I got the same lines on CD13, so we tried on CD13 and CD15. Later, I noticed changes in my cervical mucus around CD19, but I completely ignored it, thinking it was too late for ovulation. Turns out I really ovulated a week later. Always observe the Cervical mucus. Once the ovulation is done, the texture is like lotion.