My best advise to u is to see and re. I love mine. he watches my folicals form. we do the trigger shot. He was there when i got pregnant and when i lost eh baby. we are now doing it again and i find it worth it. It does cost a little but ( 2000 ok so a lot) but it was worth it to me. some times they can word things to get your insurance to pay for it. out of all of my test and ultrasounds i have only had to pay for a hand full. I would try it. IF u have any more questions feel free to email me.
It could have been an anovulatory cycle. Did the Dr take any blood work to perhaps see what your levels were? They say to track your temperature to see when you may be ovulating this cycle or your dr may do some test.
I would also pay attention to your CM and that may give you indications if you are ovulating.