Many things: There are many factors that can throw off a women's cycle. Also pregnancy test accuracy can differ. Try a different brand. If negative wait a week and re-try test. Unfortunately, stress can throw off a period too..
Answered 5/13/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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