The abnormal bleeding is your body's own red flag of danger.

这反常的流血是你身体本身的危险信号。

《柯林斯英汉双解大词典》

The main cause of abnormal bleeding was due to the retained chorion.

药流后异常出血主要由于绒毛组织残留所致。

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Some early signs of cancer include lumps, sores that fail to heal, abnormal bleeding, persistent indigestion, and chronic hoarseness.

某些癌症早期征兆包括：肿块、难治愈的溃疡、异常出血、长期消化不良和慢性声嘶。

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Endometrial polyps are removed to treat the abnormal bleeding but also because of the potential risk of cancer.

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Endometrial polyps are typically identified during the evaluation of abnormal bleeding and may be found either on ultrasound or by endometrial biopsy, an office procedure that samples the lining of the uterus.

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None of these things are caused by being on the pill, but because the pill is an excellent treatment for irregular cycles the abnormal bleeding becomes apparent only once the pill is stopped.

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