Hepatitis is a serious life threatening disease that attacks your liver. Vaccines are available to protect you from Hepatitis A and B. To be protected from both types, a series of three shots are required. The first two are taken one month apart, followed by a third a few months later. They don't hurt.
Yes, you can get it from sex, and there is a lot of it out on the street today and it's getting worse. You can also get it from an infected person handling your food if they don't wash their hands after, you know.
So talk to your Doctor, and get vaccinated!
Unfortunately, there is no vaccine for Hepatitis C available today, so keep using those condoms like I know you always do!