Hi ..my progesterone test on day 21 is 13.1 ng/ml what does it mean? and thnx in advance

Ovulation likely: A misconception is that a progesterone must be 10 ng/ml or greater to confirm good quality ovulation. But, there is a lot of variation in progesterone levels over 1hr . Some studies have shown that progesterone levels can vary from as low as 2 ng/ml to 40 ng/ml within the same day. In general, a level 1wk after ovulation >5 is likely from ovulation. Also, you can try OTC ovulation kits for home