So you risk was unprotected oral sex only, correct? And your first concern is hepatitis. Hep A is primarily from oral contact with fecal matter. So, you'd have to ingest fecal matter. Receiving oral sex is a no for Hep A as you ingested nothing. Hep B. That's more of a concern. That can spread with saliva. https://www.webmd.com/hepatitis/hepatitis-and-sex-frequently-asked-questions That is probably the biggest risk with regards to your hepatitis risk. Hepatitis C is spread through blood. Cuts? Blood in saliva? Those would be the risks there but it is a low risk. There are indeed other std's to look out for after receiving oral sex. Herpes, syphilis are two.