About a week ago I thought my gerd sypmtoms were acting up while on vacation. I was not eating my normal diet and I was getting some reflux. I was getting the pressure under my breast bone, then burp and I would be OK. Minor chest aches while this was happening which would also go away with the burp. I then started to get a back ache mostly between the shoulder blades now mostly on my right side up to the shoulder. My reflux has mostly stopped since I started taking my meds when I cam back home, but I still have the back ache on my right side up to the shoulder. Also the chest aches have also gone away except when I fill a burp coming on. The meds seemed to have cured all but the back aches. I can golf, sprint walk, mow the lawn, and I feel fine. I usually get this ache while just sitting around or when I lay down to sleep. I should also mention I was in a rear end collision 2 motnhs back and have been getting treated for that the whole time. Could sleeping on a new mattress cause the back ache or could it also be gall bladder or a gerd? I have previously gone through all the heart exams with flying colors.