I am sorry to hear of your situation. I can relate entirely; I also wound up with C diff after surgery. Im reading alot of your liver, stomach, and gallbladder, and the normal testing of them, (except for elevated liver enzymes) but I have seen nothing here regarding your pancreas. And, the pancreas is a huge organ that sits in the top left and right quadrants. If you have not been assessed for pancreatitis, an inflamation of the pancreas, I do reccomend you discuss this possibility with your physician.
Signs and symptoms are the pain you describe, but in addition there is often nausea, fever, and the pain gets worse after food or drinking alcohol.
Pancreatitis can be found by doing blood work to check for levels of the enzymes amalase and lipase...in addition, with pancreatitis, liver enzymes can be elevated, and calcium levels can be decreased.
Here is more information regarding pancreatitis: http://www.mayoclinic.com/health/pancreatitis/DS00371/DSECTION=1
I do suggest discussing this with your doctor. If the pain becomes wracking and severe, it may merit a trip to the ER to be sure nothing horrid and acute is happening.
I hope I was able to help,
You are very welcome. I lean towards the pancreas because from what you write, its the only organ that has not been checked. And yes, your pain is not a textbook presentation but not all diseases present as the textbooks state. In many cases, pancreatitis CAN show up on a CT scan, but from what I am reading it needs to be a more focused CT scan.
I also venture this guess based on the many antibiotics you took. The sulfa class of antibiotcs can cause pancreatitis. Sulfa antibiotics include bactrin.
I also state this because of your diet. The pancreas secretes enzymes which help to break down fats...if you have pain after eating fatty food, it could be because of an irritated pancreas.
I admit though that it is a guess on my part. But once all other possibilities are eliminated, the ones left over are contenders (to misquote Sherlock Holmes).
This is puzzling...I am happy you had normal amylase and lipase. I am running out of ideas here and will opt out and refer this question to a colleage.
Neuromuscular pain feels "sharp" and "stabbing" and intensifies as the day progresses and especially with stress. You should have an MRI to rule out an impinged nerve root. http://www.backpain-guide.com/Chapter_Fig_folders/Ch06_Path_Folder/4Radiculopathy.html
Gallstones are a common cause of right subcostal pain; however, you had a CT that didn't show gallstones. Therefore, it's obvious that something is mimicking gallstone pain in your RUQ. An impinged T7 or T8 nerve root commonly mimics gallstone pain.
I recommend you ask for an orthopedic or neurosurgical consult. You should have an MRI to rule out compression of your T7 or T8 nerve roots.
If you have questions please ask me.