Hi! I've been searching high and low for the answer to this question! I'm 32 and generally feel fine. I'm a yoyo dieter, just in case that's important. I mention this because I've recently started my work-out regiment again, which includes lifting weights - I HOPE this pain is just a pulled muscle that's affecting my belly button?! It's such a weird, dull and existing pain - but some movement can cause it to turn to sharp pain. I've had it for 3 days now. It's uncomfortable to sleep on my stomach, but not unbearable. I do have the appendicitis suspicion, but the pain has not moved at all. It's only the 1/4" circumfrence around my belly button. There is not stuff coming out of my belly button, or anything alarming like that. It's just this pain that has come and hijacked the area around my precious belly button! If anybody has ANY insight to my problem, please holler! Thank you!