I've had some muscular chest pain for the past 3 or 4 days, in line with my armpit. Ignored it as assumed it was from carrying my large 6 year old at an event on the 6th. This evening I have just finished a 4 hour drive, and the pain is immense. Chest pain is still there. Neck pain, arm pain, upper back pain, shoulder pain, occasional pins and needles in fingers. I can't do anything about it tonight and plan on calling my GP tomorrow. Sounds like a 'trapped' nerve doesn't it?