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Your symptom: Ongoing feelings of sadness, hopelessness, irritability…

It's normal to feel down sometime. But if the sadness, anxiety or tearfulness just won't quit, you're having issues with sleep, and you're feeling anxious and having problems with day-to-day life, that's something to be seen for, says Celi. Those signs of depression, among others, are surprisingly common: One in 10 women in the U.S. are affected by symptoms of depression, according to CDC data; and it is most prevalent among women between the ages of 25 and 44. "The problem is, sometimes people think their problems are too vague or feel like they should be able to power through it," says Celi, so they don't tell their doctors. If you feel sad or overly stressed-out nearly every day for two weeks or more, schedule an appointment with your healthcare provider.