Hello and thank you for your question,
Liver hypodensities are usually benign findings and most often represent fatty deposits in the liver. I do not believe that these hypodensities are the cause of your symptoms, however, I would recommend follow-up CT scan in 4-6 months to make sure the size has not changed.
Now more to your question of chest pains. I am assuming that you get regular mammogram and they have been normal. Otherwise, you definitely need a mammogram. Quite often, chest pains that you are describing can be caused by acid reflux so I would recommend seeing a gastroenterologist for an endoscopy as CT scan is unable to pick up what is going on in your stomach. During endoscopy you will also have a test for H. pylori infection. H. pylori is bacteria which lives in the lining of the stomach and which can cause upper abdominal and chest pains.
You also might consider getting evaluation of your gallbladder, specifically HIDA scan which will measure the functionality of the gallbladder.
Knowing that your heart is in good condition is great news.
I hope you find this information helpful. Please feel free to follow-up with any other questions you might have.
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Best wishes and good luck,