Our expert says:
If you are having difficulty in getting to a doctor which is the ideal situation to assess if ovulation is taking place despite a regular menstrual cycle and a negative urine LH test, I would suggest that you do a day-21 progesterone level to ascertain if ovulation is definitely taking place. If your progesterone on this particular day is high then ovulation is taking place and it is quite possible that the tests that you are using may be giving you a false negative result.
Answered by: Dr Y.M. Dasoo
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