All HIV questions should be posted in the HIV community, so please any follow up HIV questions please post them there.. As for STD's, you did have a risk so here are testing times:
Gonorrhea and Chlymida-1 week post exposure
Syphilis-6 weeks
Herpes-4 months
and as said above HIV is 3 months
.
Your possibility is 1/1000 but it is still there, an hiv test 3months post exposure is conclusive, so take the test now and you will have your answer you should be fine...