Have you talked to your doctor about this? I have a menstral cycle every month, it is irregular though. I thougth I was ovulating, but was not. They have given me clomid and that alone did not help. Now I am taking clomid and metformin and that has helped me to ovulate both times. Good luck and if the test comes out neg. Next month, talk to your doctor.
I hope the site that trevino posted helps, I checked it out and it worth trying!! Thanks trevino for sharing with us!!!! :p