Even though these drugs are immunosuppressants, there is no evidence that they can produce a late HIV sero-conversion, even though the literature on this is limited, but their
mechanism of action is different to the production of HIV antibodies. In any case, I strongly beleive that all of this is irrelevant in your case, becuase you did not put yourself at risk whatsoever.
All the symptoms that you describe are more likely to be side effects of the medication that you are having.