Clomid and late AF

Alex • Expecting our first baby on December 1, 2016 and loving every moment of pregnancy and the final months of just us <3
I am currently on CD29 and 13 DPO and had two negative pregnancy tests, AF is supposed to start tomorrow and my BBT is still high, my cervix is high, and I have creamy CM
I'm supposed to send my OB/GYN my BBT chart to show if Clomid worked this month- but I'm nervous to delay the start of my second round due to a no show AF. Has anyone else had AF not show when on Clomid? I do not have PCOS and have been taking Vitex the last three months and have had a 30 day cycle regularly the last three months. 
Help and advice welcomed.