Sharp Pulling Pain in Belly Button - Part 2

I am a 33 year old man, and have been getting this same "belly button being ripped out from behind" pain for at least 20 years.  I can empathize with everyone on this site because it is about the most horrible pain imaginable, and when it happens I can almost feel the joy being stomped out of my life.  I think the worst part about it is the uncertainty as to when it will happen.  It was very infrequent (once a year at most) for the longest time, but I have had 3-4 episodes within the last 3 months.  The only similarity in each case was constipation.  After years of blowing it off, I decided to go to a urologist for answers.  He ruled out UTI or bladder infection, and ran a CT scan for possible hernias.  No sign of umbilical or inguinal hernias.  He concluded that a muscle strain is the cause of the pain, believe it or not.  In my mind, I can't imagine how a strain would cause a terrible burning pain when urinating, but then again, I'm not a doctor.  Also, it seems to disappear as quickly as it comes, which seems to fly in the face of a strain.  I would imagine the pain being constant whenever the muscle is being used, which in the case of abdominal muscles, is nearly constantly unless resting, but I digress.  This latest episode started the same day I did some abdominal exercises (first time doing them in years), which would support his findings, however.  He mentioned that the "pushing" motion with the abdominals can trigger the pain.  Here is what I would recommend the next time you have the pain.  Apply some type of heat to the navel area, be it a heating pad, a warm bath, or the previously-mentioned "warm rice in a sock".  Take some sort of laxative or fiber supplement to combat any constipation that might be aggravating the back side of the abdominal muscles and navel.  When the pain is present, I find that urinating in short bursts, rather than a constant stream, avoids the dreaded burn.  I'm thinking the constant deflation of the bladder is aggravating the muscle as well, so a gradual emptying via the short bursts method, allows for less contraction.  Also, try to pinpoint activities you may have engaged in during that time that might help us further isolate the problem, and hopefully avoid it all together.  I like the idea of trying to stay "regular" as much as possible by either increasing your water intake, or adding some type of fiber supplement.  Like I said, I can't remember having it when I wasn't constipated at the time.  Also, trying to gradually work up to abdominal exercises as opposed to short bursts of activity couldn't hurt either.  I pray that everyone afflicted by this horrible condition is able to find some comfort in this forum, and in my reply.  Only those who have experienced it can truly appreciate the anguish, and interruption in our lives, that it causes.  I wish a healthy new year to all of you, God bless!