Gall bladder polyp with fatty liver?

Following a bout of pain and vomiting six months ago an ultrasound scan found a 1.8cm polyp and fatty liver. I have some low grade left sided pain and bouts of slight nausia. I have been on a low fat diet for six months and have lost 2stone but am still overweight. I do fee extremely tired a lot of the time and sometimes get extreme indigestion. I have suffered for some time from acid reflux causing difficulty swallowing. One consultant tells me that 1.8cm is very small and wanted to discharge me the other wants to remove the gallbladder as he says that 1.8cm is very large. I have been given no dietry advise both consultants inform me that this polyps is definately not a stone. Any advise should I have surgury what kind of things can I do to help myself. It worries me that this scan was done six months ago and the polyp may now be bigger and possibley cancerous.