Hi. I am 28 yrs old, and I am curious about why I am having pain in my left, upper chest and left arm right before my period. When my period begins, the pain leaves. Why? I am 5'3" and weigh 180lbs. Medical history: asthma as a child and poor eyesight. That's all.
haithanks for using HCM.THIS PAIN is due to the heaviness in the breasts,added with pain otherwise called as mastalgiacaused due to hormonal imbalance during pre menstural periods in many.otherwise it  is insignificant,asthma is environmental,seasonal or allergen induced due to the hypersensitive airways,not related to the periods.dont worrytake care