late to ovulate, 12 days late for AF , BFN- any hope?

Jennie
Has this happened to anyone?? 
My husband and I have been TTC for 7 months. I just did blood work at the doctor on the 3rd of April and they said I hadn't ovulated yet, or I had missed my ovulation. My period was due to start around the 10th/11th and still hasn't come! I have taken several test about every 4 days and all BFNs! I haven't had any period symptoms, some cramping but not bad, and white CM. I'm 32 and have never ever missed a period in like 20 years! I have been a day or two late in the past but nothing this long. Also no big stresses in my life that would cause any kind of malfunction. Has anyone been through this and come out with a BFP??
I have a a doctors appointment next Friday for blood work, but I don't want to get my hope ups too high.

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