If it has been less than 72 hours since  your possible exposure to HIV, you can take PEP or Post Exposure Prophylaxis, a pill taken for 28 days that is almost 100% effective against HIV.
Act now because every hour counts. 

You will not know if you have contracted HIV, because of the window period, the one to three months needed for an HIV test to detect if you have HIV. 

Is PEP right for you?   More information

Resources for Consumers
Basic PEP Q&As for Consumers from the CDC including information on workplace exposure and getting help paying for PEP.
PEP 101 Consumer Info Sheet

Resources for Providers
CDC Resources for Clinicians for Preventing New HIV Infections
National Prescribing Guidelines from the Centers for Disease Control (CDC)

PEP Consultation Service for Clinicians
1-888-448-4911 9:00 am - 9 pm ET