Are you saying you had severe reflux in the past? If so, VSG may not be your best option. But if you just had bad heartburn on rare occasions, that's different.
However, if you had it occasionally, there's no way to predict whether you'll get it after surgery. My doctor is currently trying to decide if I should get a revision due to reflux. I don't think I had reflux before, but I'm not positive and did not have an endoscopy before the surgery. However, due to swallowing issues after surgery, he sent me for an upper GI and I completely impressed the radiologist (never a good thing.) Every time I swallowed, I was refluxing all the way to my collarbones. However, it is a small percentage of VSGs that need to be revised. If I didn't have a real issue with GERD before, it wouldn't be a major factor in which surgery I chose. Have you had an endoscopy to see if you have GERD damage now?