I'm so confused

Had AF on 4/14, had an HSG on 4/22, my doctor saw a mature egg on 5/2 and told me I should ovulate by 5/5 or 5/6 (never got a positive on an opk). My AF for this month was scheduled to begin on 5/14, but nothing is happening yet. I don't think I can be pregnant because I'm not even sure when/if I ovulated. Should I keep waiting for AF, take a pregnancy test, or call my dr tomorrow to find out wth is going on? Any advice/suggestions would be great