I was fine out of bypass then week 2 i started get pain in my side, rolling up to my ribs and reaching my shoulder. Almost took my breath away at times. When i rang my team they said it would be wind as they fill you full of gas, they said give it another couple of weeks and if no better we will bring you in to check you over. So i would just ring you team and ask, i does sound like what i had but its worth ringing to find out chick x