Doctor was so sure I had pcos but tests came back normal, what are your thoughts about his competence?

Diagnostic Criteria. To be fair to both you and to the doctor, it's not unusual to suspect a diagnosis and be wrong. Sometimes in diagnosing pcos there can be grey areas of interpretation; there are currently 3 distinct sets of criteria for the diagnosis so it may be 'yes' or 'no' depending on the criteria used. What tests were done for you, and what were the results (not just 'normal?").