Hey guys

Im really paranoid about this incident, whether it may or may not get me infected with HEPATITIS B etc

It goes like this:

I was buying a cold drink and saw how the guy prepared my drink. He stirred the drink with a stirrer and tasted the stirrer(I presume its to see whether the amount of ingredients added is right). After he tasted it, he put the stirrer back into my drink and stirred it again.

Knowing that I have bitten on my tongue a little(and it bled) in the morning, I hesistated whether or not to drink it. In the end, i did and now Im getting really very paranoid about whether there is a risk of transmission of diseases such as Hepatits B or even HIV. Im not really sure whether or not, at the point of drinking, my tongue was still bleeding.

Can some experts tell me whether is there any risk of infection of Hepatitis B or even HEPATISTIS A,C What if there is blood in his saliva? If there isn't, does it make a difference? Please help me because based on what Ive read, saliva is one of the medium for the transmission of HEP B virus.