Constant Pain and pressure in Left Abdomen

[afarru]

For the past six months I have had this nagging pain in the left quadrant of my abdomen.  I wake up with it and go to bed with it.  Food does not make it start hurting.  Although, I have noticed alcohol does make it hurt worse.  I have also noticed that my left abdomen is larger than my right side.  Sorta like it's swollen.  Sometimes the pain is sharp, other times it's more of a pressure.  My skin also itches where it hurts.  I have diarrhea sometimes with it and have noticed mucus in my bowel movements.  I have taken nexium, tagament, probiotics and even a colon cleanse for a month and none of these helped.  Lack of insurance has prevented me from getting certian tests, such as a colonoscopy or EGD. Please give me some insight of what illnesses this could be.