Varies: They can be very accurate, but it depends on if you use it properly, when you are i your cycle, how long you have been pregnant (if you are pregnant). Since september is while ago, i think you probably have your answer.
Answered 7/31/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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