I went for a period of about 18 years, 1982 to 2000 without seeing a specialist about crohns. Very strange, in hindsight. I think it wasn't bothering me much and remained dormant, because I got up to all sorts, I went diving, practised martial arts, played in rock bands, and drinking a lot (off and on). However, I do remember a really bad patch between about 1990 and 1993, when I had an awful lot of pain, but I was living on my own and so gormless I just didn't go to the docs... I'd spend entire days curled up in a foetal position. Looking back on it I was not being very clever at all, I've now firmly got the message that it's better to get things treated before they get worse