I think you're at greater risk of acquiring a bacterial infection versus HIV, if anything.
HIV doesn't tend to survive well on dry, exposed surfaces. If you want to be sure, and to ease your mind you, can have an HIV test done. However, just to save you another trip, you should wait at least 3 to 6 weeks from the suspected exposure before going for the test as it looks for antibodies to HIV which takes a few weeks to develop in the body.
Hello, Thank you for your post regarding HIV testing. The other kind contributor that replied to your post is totally right when he states that the virus does not survive for very long outside the body on a dry surface. In fact HIV can survive only a matter of minutes if it is not in the right medium (i.e. blood, body fluids) and at the right temperature. Therefore what happened to you can be considered a very low or a no risk situation in regards of HIV transmission. In addition to that, you do not know the status of the lady and statistically she is more than likely to be HIV negative.
Bearing all this in mind, you do not need to be tested for HIV.
Best wishes,
Dr Jose