I washed my face with well water 5 days ago, a drop went into my nose. Can I be infected with Naegleria fowleri?

Question

Ok, 5 days ago, I washed my face with well water and a drop of water got in. I am in Brazil, and it is the beginning of spring here - October. Since then, I have been getting on and off anxiety. I get slight headaches, and now have some soreness in my neck. I keep thinking that going on Google is making my anxiety worse as there is a lot of different information and part of me cannot shake the thought of getting this horrible infection. The water was cool. I am 44 and wish I could shake this anxiety. I did blow my nose after a small drop got in, and even dried the nostril with a napkin.