Hello, I m a healthy 36 year old female with no known allergies or asthma. I m med free. However, twice within this month I ve broken out into a rash from under my left armpit up my chest that stops at my neckline. It runs around my shoulder blades. I ve noticed my left armpit had a purple like bruise each time. The rash is red, moderately itchy and a little swollen. It lasts for two days. I haven t introduced a new product into my diet or on my skin...