This is weird but is this how food aversions work

So like literally since my first sip of soda as a child Dr.pepper has been my F A V O R I T E , but like for a lil while now it’s been tasting like straight cleaning product to me 💀 I kinda have a hunch I might b preg this month , I’m 8 days away from AF and I’ve been noticing somethings like acne and fatigue and bloating and back pain, tenderness in overall chest belly and back, But I’m aware those also could just be a thing !!! But since I haven’t successfully conceived before idk what food aversions are like !? It’s just weird that one day it’s my favorite soda and now it tastes like bleach LITERALLY IT TASTES LIKE A CHEMICAL TO ME ATM. And all I wAnt is root beer and I nEver was a rootbeer freak like that . Just wondering if that’s how it works or if I’m crazy lol