All sexually active people (outside mutually monogamous relationships) should be tested for HIV from time to time, like once every year or two. If you haven't been tested recently, this probably is a good time, when it's on your mind. But not because of this particular sexual exposure.
Welcome to the forum.
First to dispense with HIV: the chance is low your partner was infected, and even if she was the chance of transmission was low; and your symptoms dont' suggest HIV. HIV symptoms cannot start sooner than 7-10 days after exposure.
As for other STDs, this sounds like a definite possibility. Most STDs that cause uncomfrotable urination or burning also cause obviously abnormal discharge from the penis. However, burning often comes first with discharge of pus or mucus coming in the next couple of days. With such rapid onset (2 days), gonorrhea is the best bet. Symptoms of chlamydia and nongonococcal urethritis (NGU) generally start after 1-2 weeks. Another possibility is just physical irritation. For example, if the condom had a spermicide like nonoxynol-9, it can be very irritating inside the urethra. However, if that were the problem, the burning would have been immediate, not delayed a couple of days.
No STD causes fatigue or other flu-like symptoms, so that part of your story doesn't concern me at all. It could be psychological, given your obvious (and reasonable) anxieties about this event.
You need to see a health care provider right away. Do not go to a lab for testing without professional advice; see a doctor or clinic in person. I don't know the situation with respect to public STD clinics in Mexico, but you might look around for one. Don't try to treat yourself in the meantime.
Even if you end up with gonorrhea or other STD, the risk of HIV remains low, under 1 chance in many thousand. STDs like gonorrhea roughly double the risk of HIV if exposed. Double a very low risk still leaves very low risk.
Regards-- HHH, MD
Dr, thank you for your quick reply,
I'm scheduling a visit with my doctor after your suggestion.
Private health services here in Mexico City are mostly the same as in the US, public services on the other hand... well....
Im hoping this is an irritation,I masturbated twice the day after this incident.
I can urinate with no pain and I haven't noticed any discharges... it's just the discomfort in my penis and the general malaise I explained.
Anyway I know that an examination and STD tests are the right thing to do instead of continue worrying... i'll get right to them
Just wanted to be sure that HIV is not my problem here; would you consider an HIV test in this scenario?
Thank you,
Mario