The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.
I am Mysticdoc, experienced Internal Medicine Specialist.
I am here to help you with your concerns.
Do you have nausea and vomiting also?
now do you notice worsennig of symptoms with certain food like fatty meal?
yes please reply
any yellow discoloration of the urine?
any change in bowel habits like diarrhea?
Do you take any medication daily basis?
Liver problem is one possibility.
Gallbladder problem less likely.
Pancreatitis less likely.
Viral infection of the intestine is also a possibiltiy
More likely can be muscle spasms if the rib cage.
Muscle strain from physical activities can trigger this.
If the nausea, vomiting worsen, then viral hepatitis is likely.
That should be confirmed with blood tests.
Otherwise, this i not serious.
most likely will improve with time, bland diet.
is it a swelling?
how does it feel like on pressing --muscle like?
Ok-- liver can be felt like this if inflamed.
I will suggest a liver function test.
Ultrasound if it is abnormal.
also test for hepatitis if LFTs elevated.
If liver test normal, then this is likely muscle related.
Ultrasound will rule out any other lump.
Not that concerning still --going by your symptoms and recent onset.
But still, liver test should be considered.
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