I had that exact same pain after my band surg.I even called my doctor at the time.All is normal even popcicles will cause the chest pain due to the fact that after only 4 days,your insides are swollen and your stoma is probally very swolen causing anything you eat or drink to cause the feeling.It will pass,i used to walk up and down the driveway and put my arms up to help it pass.. I hope this helps you and good luck to you.It will all be worth it in the end....:huh2: