Chances of this being primary peritoneal cancer are incredibly low, even given your history of cancer, however your Ca125 is only 15
99% of healthy women have values less than 35. Levels above 35 units are certainly seen in healthy women, but beyond the cutoff point of 35, the higher the value, the more likely there is trouble somewhere in the
Also, the cnace of it being from another cause such as gastroesophageal reflux or irritable bowel syndrome is far higher.
Given your history and your new symptoms you should have a contrast enhanced CT of the abdomen and pelvis though.
That would put your fears to rest about primary peritoneal cancer specifically and also alleviate any worries about other problems causing your symptoms.
That does not rule out primary peritoneal cancer, but that would be so very unlikely given just those symptoms you are having as there are far far more common other causes.
I think given your new symptoms you should have a CT scan with IV contrast, not because I am worried about peritoneal cancer, but because these are new symptoms and a CT shows some things that the ultrasound and colonoscopy can not
So I am not concerned about malignancy(cancer) specifically, I just think it would be the next appropriate step for you to investigate your symptoms. Your physician may also persue treating/evaluating your for gastroesophageal reflux.
They may try switching you to a different medication then. Some work for one person and not the other. There are many similar medications. Pantoprazole may just not be the one for you.
I'm not concerened about anything horrible.
They ruled out the most horrible things, which is what you are concerned about
But a CT is simply far more diagnostic.
You have some anxiety which is understandable gien your family history of ovarian cancer
And personal high CA125 levels
Your primary care doctor can order a CT
Did I provide you a satisfactory answer to your question?