Did you use three condoms together or changed condoms three times? Anyway if the condoms didn't slip or broke it was safe sex, there was no risk and no need for testing or PEP.
Remember that putting a condom over other condom actually increases the risk of breakage or slippage. There was no need to wash you penis with alcohol, after safe sex just remove the condom carefully and wash your penis as usual. I can't imagine how painful it was to wash it with vodka.
Are you on PEP because of the encounter you describe or some other event?