painful abdomin(abdomen) with lump

[GG1212]

For several months now I've been having quite a bit of abdominal pain which varies, eating or not (non specific).  I generally suffer the most when I'm driving in the car to work (45 Min drive) and I feel as though my organs are bunched up.  In recent months I had a lump (hard cylindrical) show up on my upper left quadrant.  .It is becoming increasingly painful and if I press on it, it sends a good amount of pain to my chest and center of abdomin (abdomen).  It is most prevalent when standing however when I'm lying down it rest's on my rib cage.  I had a abdominal CT scan and nothing showed up of concern.  My new doctor thinks I may have a Lipoma and has referred me to a surgen.  Other symptoms/issues  I have are bloating, excess gas, weight gain and have been retaining water.  I do have bouts with IBS but am usually able to stay on top of that.  I'm at my wits end and am due to deploy within the next couple of months and would like to ensure to best of my ability that I am medically sound.  Any suggestions would be greatly appreciated.