HIV is inactivated in saliva and air which means it can't infect from oral which includes kissing. So those are 2 reasons you had zero risk. Double zero risk.
No one in 40 years of history got HIV from oral. Even with blood, lactation cuts, rashes, burns etc saliva and air do not allow inactivated virus to infect, so you had zero risk.
There is an std forum you can get std answers on, including the fact condoms do not protect against all std.