hi .i had 2 minutes unprotected exposure in india from street sex worker on january 24 2014. 5 days after exposure i got hiv dna pcr test and it was negative and again i got hiv 1/2 antibody test on 35 day (5weeks) and it was negative.i only have dry cough,pain in right bicep and no other ars symptom. what are my chances of contracting hiv and is my 5 week test conclusive .if not what tests should i take and did you see 5 week test turning positive anytime .please answer