Daisy, I same as you 1 week post op and have the same pain all up my left hand side. It is I am led to believe all the muscle strain and bruising as the surgeon, if right handed, does all the work from the left and the main port he uses is on this side.
Its like a pulling and sharp stabbing pain??? I have just been stretching my arm up and breathing deep. It will go, eventually.
How's your recovery hun?? xx