Hi I’m new, anyone else use the Femometer

Hi everyone,  I’m currently on day 43 of my current cycle which also is 3dpo for me. I have Pcos so my cycles are longer.  I recently purchased Femometer and been tracking my bbt and opk. I had a really strong opk surge where my test line was much darker than the control line. This was very exciting as i never knew I ovulated before as all tests use to come back negative.  Does anyone else use the Femometer?