Need help..!!!!

Hello ladies I urgently need your help.. Me n my hubby trying for baby #1 from last 4 months but no good news yet n I went to my doc n she did a blood test on 21st day of my cycle n everything was normal there n also she told me that I ovulated which was her main concern. Today is 39th day of my cycle n AF din show up n I din check as there are no prego symptoms at all than actually what went wrong that AF din showed up.. Please suggest me something ...