I'm sixteen years old after having a two week mirgaine and then contracting a bad cough,I started to feel a pain on the side and underneath my right breast.It feels worse when I lie on my back and when I stretch.I was wondering if I just hurt a muscle or something due to the coughing because when I felt around my right breast it felt bruised though there were no signs of anything wrong.I also feel a pain when inhale,coming from the same place.
Is it serious or will it go away on its own?