Can I get HIV from a blowjob? From giving head? From getting a BJ? Or from swallowing semen?
Oral sex is "low risk" in terms of getting HIV. There is no transmission risks for receiving oral sex. You probably will not get HIV from giving oral sex either—but having cuts or sores in your mouth, gum disease, having an STI in your throat, or recent dental work increases your risk. If any of these applies, you may consider refraining from performing oral sex to reduce your of exposure to HIV. If you're taking PrEP every day as prescribed, there's very little that you'll get HIV by giving someone a blowjob, or otherwise.
Remember, while the chance of getting infected with HIV from oral sex is very low, you can easily get other STIs such as gonorrhea and chlamydia.
You can read some of our other articles to learn more about the relative risk of different types of sexual behavior.