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Welcome to JA and thanks for asking
Can you please send the picture of that lump?
How old are you? any other medical problem or medicines you are taking?
This can be
The hard spot needs exam.
Often this could be a lipoma, which is a fatty tumor, not serious, but panful.
Given that gallbladder can become acute, I suggest an urgent care exam today.
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The main concern here is gallbladder infection and this needs to be urgently evaluated and treated. I would advise you to go to the Emergency Room, not an urgent care center