Thanks for writing to us.
It is not necessary that you must ovulate in every cycle. If the LH test is negative it means this one is going to be an anovulatory cycle
for you. The delayed ovulation is also a possibility. An ultrasound
scan will help in confirmation.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Rakhi-Tayal