I started metformin for my pcos on september eighth in hopes it will help me get pregnant. I started my first period in over a year on October 9th, I started using opks the 17th the first one only had the test line Friday a light response line Saturday and Sunday the line was a little darker but not as dark as the test line. Monday it was back like Friday and today it was non existant like Thursday. Is it okay to assume I ovulated even though the response line still didn't get as dark as the test or do u that it be faulty tests? Any help needed thanks