My DS1 used to have redness which I had checked out when he was a baby, doc said the same thing, but he's 17 now and did need to have it done.
DS2 had a longer foreskin which also used to get a bit red he's 15 and no need for him to be done either so try not to stress too much.

I think some doctors jump to the circumsision conclusion too quickly.
Obviously there are some times where it is completely necessary but not always.