I have two questions to consult you. A few days ago, I made an appointment with a prostitute online. At the beginning, after she took a bath, she insisted on doing oral sex without a condom, which I felt was risky, so I didn't let her do it. We didn't have sexual intercourse. She directly licked my nipples and then gave me a hand job. Later, because I didn't ejaculate during the hand job, I ejaculated through nipple sex. Afterward, I noticed that there were many red scratch marks on her breasts, and upon closer inspection, there were several small blisters on her breasts. She said they were caused by mosquito bites, but they didn't look like it. Now I'm worried that the blisters on her breasts might have broken and secreted pus, which might have come into prolonged contact with my penis. Also, during the hand job, she touched her breasts and seemed to have touched her vagina. Should I take a post-exposure prophylaxis (PEP) drug? Because she insisted on doing oral sex without a condom, it seems like there might be a problem.