Many possibilities: Many things including pregnancy can cause this. If your pregnancy test is negative it is unlikely that this is because of pregnancy but the stress of worrying about pregnancy as well as other stresses can do it as can exercise, weight changes, diet, changes in your schedule, medicines, thyroid disease, PCOS, and other diseases. You need to see a doctor for an exam and testing to know why.
Answered 9/5/2014
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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
4 doctors weighed in across 2 answers
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