If your luteal phase lasts anything under 10 days it is considered a luteal phase defect. But some doctors believe that if the luteal phase falls under 12 days, then it is a problem. If you conceive and you have a luteal phase defect, you will have an early miscarriage.
A luteal phase defect cannot sustain a pregnancy because the uterine lining in these women begins to break down, bringing on the menstrual bleeding and causing an early miscarriage. There could be more than one reason for the luteal phase defect which can be found out after medical analysis. Going by statistics, the number one reason for a luteal phase defect is low progesterone levels. Your doctor can do a progesterone test on you 7 days past ovulation to determine exactly how deficient you are. Once you know that there are several ways of correcting this defect.
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