Nothing apart from ARV drugs can affect HIV test result or antibody production.
No interaction and they sound very necessary to help you with anxiety.
"No significant effects of viral load or current use of antiretroviral medication on citalopram effects were found on any of the responses, at any of the timepoints."
Did u read these lines?
The drugs r of different classes n would not affect hiv
Anyway, u do not have to worry and think so much
Oral, anal or vaginal and did you use condom?