2 days ago I experienced a stitch in my left side, it lasted about 3 hours then went away. I awoke with disconformt from the front and back of myy nect , down to my sternum and in my upper chest. it is quite uncomfortable (about #7 in pain, at times 8), little coughing, no fever, no tingling in arms, no dizziness and good appetite. 60 year old female, healthy.