Pale Stool - PC Concern?

[buzzy67]

I've had a few pale stools over the past few months.  They are usually loose.  When they are loose they float but when they are firm they often sink.

In addition to the stools, I have also been experiencing a dull pain under my rib cage on the upper right part of my abdomen.  It will sometimes be a sharp pain that briefly makes it hard to take a deep breath but usually is more of an annoyance than anything else.  I also have heartburn regularly that I treat with zantac as needed.

I had a clean colonoscopy and endoscopy in 2015.  The doctor did see a bit of inflammation in my esophagus and suspected I might have IBS.  Other than that, all looked good.

More recently, because of two kidney stone trips to the ER this fall, I have had a lot of scans and tests.  I've had two CT's without contrast, an abdominal ultrasound and and MRI with contrast to check on a kidney lesion that ended up being classified as a simple renal cyst.

Although they weren't specifically looking for pancreatic cancer, all of these test found no 'remarkable' issues concerning my gallbladder, spleen, liver or pancreas, saying they looked normal.  In addition, all my blood work has come back good multiple times with the bilirubin, liver enzymes and urine readings all within normal range.

My GP seems unconcerned about my stools and the upper abdomen ache.  He said that if it were a case of pancreatic cancer one of the scans would have shown something and I would most likely be dealing with other issues such as jaundice.

He is a really good, caring physician and I trust that he takes make concerns seriously, but I still worry, especially after googling symptoms, thinking that all those test collectively missed an obvious finding.

Should I quit worrying over nothing and if I should, what are the reasons for the light stools and the dull ache.

Thank you all for reading.