Hello Transmission of HIV depend on many condition in such type of cases as : The risk increases for exposure to sex from a patient with advanced-stage disease, probably owing to higher titers of HIV in the secretions in cervical secretions and vaginal secretions, such as presence of more virulent strains of virus. The use of antiviral drugs by sex worker if she was supposed used to be an HIV infected . And after condom rupture , how many seconds your penis remained in vagina , if less time less chance or more ,more chance. But you are in stress ,so recommend you please get in rapid nucleic acid amplification test ( P 24 pcr rna ) for HIV confirmation. Hope this will help you.