Metformin Question

Vanessa
Hello, I'm posting for my sister in law. She has been diagnosed with PCOS and was put on metformin. She has been bleeding for the past month and asked if I would check to see if anyone can say if this is normal. She believes it is clearing her out and plans on following up but wanted me to check with women who have taken this medicine to see if this is normal. 
Thank you!!!

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