Raw mess, i am sorry that u happened to have sex with a prostitute. Why don't you have sex with your wife. Use condom and enjoy sex with your wife. HIV don't get its way through condom unless u do the same mistake that u did to the prostitute. After 4 months get tested for HIV. Hopefully, you should be okay. For prostitute, prostitution is a business or in other words,they make money for their livelihood;therefore, those persons are as careful of contracting HIV as you are. It happens man. Don't feel guilty for that. You don't even need to express this reality to your wife, coz it might hurt her. GO ahead, enjoy your life. BUt remember next time, have 2 condoms with you. We human cannot control our emotion all the time. 2 condoms are stronger than a single condom cheers