Protected intercourse with a condom that does not VISIBLY break is not a risk for HIV. There's no need to fill condoms with water to check them. As long as the head of your partner's penis was covered during intercourse, you had zero risk for HIV.
Additionally, there's no way a person could get symptoms of HIV that soon, and it's unlikely you'd have symptoms of any STD that soon, but you can ask about STDs in that forum: https://
www.medhelp.org/forums/STDs---STIs/show/98