Hi, I am 19 years old. I previously had a breast infection in both breasts. I believe it's due to me having cracked nipples. Recently it has come back but is more swollen and painful on my left side rather then my actual breast. Both my nipples are red around them and my left breast is swollen too. I have also felt achy around my shoulder and arm. But the last couple of days I have been experiencing mild pins and needles in my left arm. I don't know if it's anything to worry about, or whether it's a symptom of the infection or something else?
