Hello doctor, The top of my belly button, that is, the skin of my belly button is hard and firm, and the rest of my belly button is not. I feel as if there is something under the surface. I changed my diet, so I lost some weight. I was 168 lbs, and now I am 135 lbs. If I place two fingers over my belly button and do wide circles, I feel like there is something hard underneath. Is this a hernia or where my umbilical cord was? I do not have pain or symptoms, but I just feel it firm and hard. What is this?
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