The only risks for HIV for those who are not newborn infants are:
1) Having unprotected (no condom) penetrative anal or vaginal sex, OR
2) Sharing IV drug equipment with other IV drug users.
HIV isn't transmitted by bodily fluid except in the two circumstances mentioned above. Your child had zero risk for HIV, and will never have a risk for HIV unless he engages in one of the above-mentioned activities. There is no detail that you could add to this event that would make it a risk for HIV.