Hi, I recently was prescribed azithromycen for a bacterial infection. I take a combo pill mononessa daily. So I started my only dose of azithromycen (1000mg) yesterday the 2nd. I was at the tail end of my pack last week into this week I had unprotected sex the 28th and 29th of July. I was wondering if I was still protected against pregnancy from last week (I contacted my gyno and she said I am protected against pregnancy from last week) . I am currently in my placebo pills on my second one today but my protection is compromised now since my antibiotic (I plan to abstain from sex for the next pack so I know the antibiotic is out) so how come I was protected from unprotected sex last week.