and a lot easyer to catch. HIV is a concern, but its far harder to catch and from a one time exposure you describe ( 1000 - 1) not to mention it is harder to transfer from a woman to a male. That said you have no idea of her status, and sweden does have a very low rate of Postive people.
So if you test at 6 weeks with a HIV DUO or 8 weeks with a antibody test, your results will be conclusive. Naturally, you need a full STD screan.
I can understand your concerns, but the likley hood of you becoming HIV positive from this is very low. Just a point to mention. Most workers in that industry wear condoms to protect themselves and test regulary, so bear that in mind