I would be a tad scared, but on the other hand, maybe this girl really likes you. So don't be a prick/asshole to the girl, and maybe you will end up with a cute girlfriend/wife.
If this turned out to be more, then, even if the risk was stupid, it paid off in the end.
Just pray you don't get her pregnant, or you future would pretty much be sealed, then again,maybe it will work out for the best.
Just don't be so stupid next time. To do that to any girl that is in this buisness or a girl that you may know to sleep around, is a big risk/stupid. Its best to know the person/have her tested etc.
Even if an asian girl is in this buisness, I am sure she doesn't want to do this her whole life, and she wants to make the best of this 'grey' part of her life, I am sure they all hope something good comes out of it.
It kind of like bar girls, they don't all do it for the money, most do it to help find someone. But when girls become desperate to have a better life, they may do stupid things and/or get taken advantage of.
I been to DR a few times, and, I can ay a lot of girls there under 20 have many baies and no father. Which is sad. So best to play safe is you care for the girl and your life/future.