south africa hiv

hi i am from south africa...which has the highest rate of hiv and aids in the world.
On the 20 december i had protected sex with a prostitute and i performed unprotected oral sex on her for less than a minute...she was a commercial sex worker.
it's now almost 3 weeks after this incident...and i notice that i have a swollen lymph node on the upper part behind my neck and 1 on the left side of my neck.
here in south africa they say oral sex is a high risk activity...so does this swollen lymph nodes mean i have hiv? is oral sex really such a big risk? or could this swollen lymph nodes signify an std?
this was my first sexual encounter ever

[Teak]

You haven't done anything to put yourself at risk of contracting HIV.

[stuworry]

Thanx so much teak i admire you alot for always answering questions and trying to help

[stuworry]

but are there any risks of contracting an STD? and what is causing these 2 lymph nodes to be swollen?

[Teak]

STD questions have to posted on the STD forum.

[stuworry]

thanx i will never do this again coz its stressing me out

[Teak]

It doesn't matter with whom you have sex with as long as you have protected sex.

[Teak]

Same as if you were with a non CSW. CSW are more apt to take care of themselves due to their profession.

[Teak]

Use condoms correctly and consistently and they don't fail.

[stuworry]

thanx guys