No. If you have been exposed to HIV, PrEP is not the best option for you because it is meant to reduce your risk before exposure. If you are reading this within 72 hours after exposure, consider starting PEP (short for post-exposure prophylaxis), a month-long course of drugs that can reduce the likelihood of infection. To access PEP, immediately contact your doctor and/or go to the nearest emergency room. PEP must be started within 72 hours after exposure. If you are in San Francisco, find out how you can get PEP here.