hiv is transmitted through...
UNprotected vaginal/anal intercourse
sharing iv drug works with an infected person
mother to child
you're fine...NO RISK from what you are describing above.
Kudos for you, you used a condom! Now relax and forget about HIV. Deal with your guilt instead. My advice, which is worth what you pay for it, is to accept the fact you are a male, you have sexual needs, you fulfilled them in a reasonably responsible way and practiced safe sex. Is a monogamous relationship safer? Answer. Yes. Do all men who have sexual needs have that option? Answer, No. Is what you did pretty damn safe? Answer Yes. I figure I am more likely to die in traffic on my way to see a hooker than I am from HIV from her if I practice safe sex. Don't beat yourself up; pat yourself on the back for being responsible.
Okay, it's fairly clear you're funneling your guilt into this whole situation and creating additional concern.
You used a condom. If you used it correctly, you're fine. HIV is not spread by kissing, nor from cunnilingus (going down on a woman) or receiving a *******.
HIV is caused by fluid contact with mucous membrane. A condom prevents this by keeping the fluids separate. That's pretty much the gist of it. For the most part, HIV is not spread by oral sex.