First of all, I'm terribly sorry for the loss of your son. I simply cannot imagine the depth of your grief...
I think you should not worry, though, that he might have had adhesions. You see one of the many mysteries of adhesions is that fully 90% of the people who have them have no symptoms or problems at all, and as for people who have very serious pain it is probably less than 1%. (Bet you didn't know you were a member of such a rarefied elite!) And even of people who have problems it is common that there is an interval of years before the problems show up. I had a c-section 8 years ago, and didn't start to have pain until about a year ago. (Although I suspect several vague little intestinal problems, and posterior baby I had in a grueling vbac 4 years ago, might have been caused by adhesions.) Plus there is the fact that you are the mom, and I'm sure that you would have known because moms just know these things.
-- cathy :-)