Femara and ovulation

Ca

I'm wondering if someone had experienced something similar.

I have a 33 to 34 day cycle. I was given Femara to take days 2 through 6. I was told to dtd CD 8 through 18. On CD 9 and CD 10 I had a positive well same color as the test and nothing but negative since. I normally o around CD 18. Is it possible I oed already. I don't get my progesterone checked until the 15th of this month to confirm. But my question is does Femara make you o early?