Opks positive..blood work said you didn't ovulate

E..
So apparently, my friend is also struggling ttc like me. She's on clomid now for like 7 months.. she takes opks every month and has gotten 2 positive opks the past 2 months. She went to the dr to see if she actually ovulated and she didnt!!!!! So needless to say even with all your hard work tracking and thinking you got a positive opk and you ovulated... it's probably wrong. Just another horrible things about ttc..