Fin for three months. Soreness in left nipple.

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Hey everyone. SoI have been on Fin for three months and I woke up last week with soreness in my nipple that won't seem to go away. I do not have a mass or anything behind it just slight soreness. It is definitely bearable. I just wanted to see if this was a common symptom or the beginning of gyno? Any help is greatly appreciated.

[deuce]

Anyone please? I quit taking it about six days but it is still sore.