Frustrated!!!

So I know this is minor compared to so many other women who are struggling, but I’m just bummed out. I’m on my 3rd round of Clomid. 4DPO. Been trying 8 months, wasn’t O’ing on my own. No symptoms whatsoever. I ovulated early this month and just so happened to test on my peak day (praying that I BD in time) considering I had not leading up to it. I get my Estradol level checked during O time. CD12, my O day this month it was 536!! Last month it was 400+. I just don’t understand why my egg and sperm are not connecting! I haven’t been diagnosed with PCOS or Endo. Why can’t it be simple 😫😫😫