Dr say i may have been born with hernia. want more info, contraction 2" left of navel. no pain, or visible lump. can be felt when laugh, cough etc.?

See a Hernia Surgeon: In general, "no bulge, no hernia", so I am a little skeptical if your symptoms are due to one; your symptoms actually sound more muscular in nature. There is, however, a rare type of hernia called a spigelian hernia that may be difficult to diagnose. Therefore, if your symptoms persist, you may be better off seeing a hernia surgeon just to be safe. Good luck!