Ok' this is the 1st time I've came across a group of people who are experiencing the same exact issue I've been having with my navel. A hard lump about a nickel size above navel area. Mine started about a year ago, its was unbearably painful on & off the 1st 3 months where I had to go to the er at the hospital. Unfortunately I was never properly diagnosed to determine what the exact problem was. the doctors just brush it off like Oh' its probably just hernia without taking any ex-ray or doing any screen work, because they wanted to save money & I did not have insurance "Go figures". So they went ahead anyway & schedule a surgery date without ever properly diagnosing me. I went online & look up everything I could on hernia & did not find no match to the symptoms that I was experiencing. So I did not feel comfortable to go along with the surgery. Then soon-after the pain subside & the lump decrease to a dime size. I do notice whenever I have gas it seem to get a little larger until the gas subside & I have notice that my gas passing increase since I had this lump above my navel. I'm 31 now & since I was 14 I've also had bad mentral-cramping during my period, not sure if its somehow related to the navel issue over time but like you all, I'm just trying to pinpoint any & all possible causes. Currently I'm doing a total-body woman cleanse that's all natural herb base & its a 20 day cleanse to clean & revitalize all of my bodily organs. I'm on my 4th day so far & I'm seeing a big difference in the size of the navel lump which decrease to a size of a grape-seed to where for the 1st time in year I could barely feel it. I've also notice the gas passing has stopped completely. Like I said I'm only on my 4th day & hopefully by the time this 20 day cleansing is up it would be fully gone. If any of you may be interested in giving it a try I ordered it from dherbs.com website. They also have a total-body men cleanse as well & the best part about it, is that its all natural. After the 20 day is completed I will update you all on my progress status, wish me luck!:-D