Baz

I'm 33, male, fit and healthy. About once a week on average, my stomach swells up really bad and I get constipated. Usually happens a few hours afer a meal and generally tends to last about 12 hours. It is VERY uncomfortable and is usually accompanied my a HEAVY bout of flatulence. Could this be IBS? If these are not IBS symptoms, any ideas what could be causing it?
What could I do/take to reduce the symptoms?


Thanks