I am going through a cycle on Femera. On Saturday, my cycle day 15, I had a follicle that was around 18.65 mm (follicle looked great)and lining thickness around 7.7. Today, on cycle day 17, I went back in for a scan and now my lining dropped to 6.8 and the same follicle was around a 19 but my doctor said today it was irregularly shaped. Is it possible that I may have ovulated or in the process? What could have went wrong since Saturday?