Worried for N Fowleri infection. Watch?

I have with your blessings and advices curtailed my fear for months now but yesterday while getting a haircut, a barber along with spraying water on my hair, sprayed water all over my face too and I could feel the water in my nose. After haircut I requested him not to use blower on my face, but even then he put the blower straight in front of my nose and mouth and I could feel the air throw strongly in my nose. That has me worried that the strong air throw might have driven any water in my nose further up the nose. Here, they use underground water from tanks or even if municipal water it is also from tanks that are hardly cleaned and are not chlorinated. Can I get N Fowleri infection or PAM? Can I take Azithromycin or any medicine to prevent PAM or I can only pray, wait and watch? I had taken paid consultation as well in the past, but am short on money since 2-3 years. I request an ENT or an infectious disease expert too to please advise.