am i at risk?

dr, i had a single exposure of protected sex with a  CSW in thailand 8 weeks ago...

- i experienced a series of symptoms after the exposure... 2 weeks after exposure, i noticed a tiny sore (size of a small pimple) at the base of my penis.. it was painless and disappeared after 4days...on the 7th week post exposure, i noticed a slightly swollen and tender lymph node in my left groin...2 days later, i experienced the most troubling symptom.. i started having dull pulsating pain in my left testicle...the pain is not severe but i do a  feel sharp testicular pain every once in a while.. the pain is intermittent but lasts throughout the day... i'm still having the pain as i'm typing rite now.. its been 8 days and the testicular pain is still here...i do not have dysuria, polyuria or any other urinary symptoms..

my questions..
1) what is your diffrential diagnosis for the testicular pain.... is it in any way related to hiv?
2) if the testicular pain is  due to a STD, does this mean its more probable that i have hiv...( because the condom dint work to protect me against std'--- could it be as inefficient in protecting me against hiv???)  

* question #2 is the one that worries me the most...

thanx....

[Teak]

Wrong forum.