Hello, doctor. I'm a gay man live in China.I had sex with another boy yesterday. Before the incident, I tested him with an HIV test paper, and he told me that his last test result was negative, but I was not at ease. The instruction manual tells me that I only need to drop 1-2 drops of dilution, but I may drop a little more, about 3-4 drops in total. His test result is negative. Then he squeezed the lubricant into my anus, and then put his fingers in to expand it. I don't know which fingers he used. I'm afraid of the finger he just got stabbed by the blood collection needle. Later, his penis was inserted into my anus with a condom, but this was my first anal sex. I felt too painful, so he entered within two minutes and I asked him to withdraw. Finally, we masturbated each other and ejaculated. I was scared after that. I don't know whether I should use PEP or not. My local CDC doctor told me that I don't need it. He thinks it's safe sex, but I'm very anxious and want to hear your opinion. Thank you!