Hi, I had a aorta bypass surgery in August(5 month back) for which a 16mm dacron tube has been used. I am no longer on any medication. My bp is also under control now which used to be around 200/120 before surgery. I had abdominal pain twice in last 2 weeks. After ultrasound I got to know that I am having a gallstone of 7.8mm. And radiologist also told me that there are some kind of particles in kidneys, so there are chances of forming kidney stones. Asked me consume a lot of water. Should I go with a surgery to remove gallbladder. Or can be taken care with medicines. Please advice. Thanks in advance.