Ache on right side under rib

littlecheese, only your doctor could diagnosis for you, but have you thought about gallbladder issues. It's located under your lowest rib on the right center. Early stage small stones can present infrequent symptoms that come and go, and affected by foods, or body position. Doctor could order an ultrasound to check for stones. All the best.

littlecheese, I developed and still have similar pain like yours, on the right side just under the ribs. It started few months after starting letrozole and has been over a year now. Liver levels are normal, CT scan is normal. Not all SE of these medications are on the list and I do believe some of us get pain sensitivities from these meds.

About 2 years before I was diagnosed, I had a pain under my right rib cage. I couldn't touch it, or stretch to get rid of it.

Despite a lot of tests, no causes were found, but I do have a benign lesion on my liver.

I lost about +20 lbs and changed my diet somewhat, and the pain has gone away. I'm not sure why, but I'm guessing it was weight or diet related.

I first noticed an ache under my right lower rib when I was pregnant. I blamed it on my son's big toe (and sure enough, when I checked his toe first thing after he was born, that sucker was enormous!). But the sensation would reappear at different times over the (many) years. I've been overweight-to-obese for years, and noticed it would get worse as I fluctuated upward. In the last three years, I've had regular CT scans, and on one of them, the radiologist noted a fatty liver. I think that might be my culprit. I lost about 25 pounds and the painful poking sensation has gone.

As a side note, I found a research paper that said fatty liver and Tamoxifen is a BAD combination, so I stopped taking Tamoxifen. I had to choose between liver damage and a hypothetical return of breast cancer. I chose door #2.

Littlecheese, glad you found the cause, but sorry you're dealing with gallbladder! Hope you find relief. I find diet helps (no sugar, hydrogenated oils, or junk food), and I often have found some relief from drinking a couple of tsp. of apple cider vinegar mixed in a glass of water. You have to just chug it down then rinse your mouth (don't brush) since the acv is acidic. All the best!

I had a dull ache on my right side under eib cage all thru chemo as well. I had ultrasound and CT and was dx with a fatty liver. I am now on anastrozol and that ache will come and go. My liver enzymes are also not so great. My GI Dr says my liver simply does not like processing all of this. It's hard to know what to do. I want to stay on the AI, but if it is destroying my liver ... which is lesser evil? So stressful.