You had protected sex and the protection did not fail during sex, therefore your risk never existed. The girl was wise and careful for herself because you were also a random guy for her. So asking for a condom was good for both of you.
You do not need any test and you are fine.....
You didn't have ANY risk for HIV. Risks for HIV are:
1) unprotected, penetrative anal or vaginal sex, or
2) sharing intravenous drug needles.
It doesn't matter if she is addicted to drugs or not. If you did not engage in either of the activities mentioned above, you did not have any risk for HIV.
This isn't related to HIV. As it has already been said, you had no risk at all so it is not possibly related to HIV. And HIV is not ever diagnosed by symptoms. You are right that this is very much more likely to be due to your smoking than anything else.