Still gassy

We are still having gas issues. We've tried every gas medicine available, but can't seem to find a cure. My last resort is to start him on the valium again. We really started to notice an increase in these problems when we started to ween him off. He has been off of valium for a couple of weeks, so we are going to restart the valium again and see if that helps. His comfort is a priority right now. I'm praying this will help. If not, we have a GI appointment on the 18th.