No, acid reflux should not ruin your voice permanently, especially since it only just recently came up. You'd probably have to go through years of abuse for something permanent. Still, take care of it sooner than later. Singing doesn't cause acid reflux, but acid reflux can cause discomforts in the throat that absolutely make singing harder.
Also, there's silent reflux, which is like acid reflux except the symptoms differ slightly. There's no heartburn usually and the person doesn't realize most of the time that it's even happening. It is specifically bad for the singing voice, which is probably the reason they call it "Singer's Reflux" lol. So it's likely that regular acid reflux is affecting your voice to at least some extent.
I just wish I could give you some fair suggestions to help, but I'm not the doctor you need to see, lol. Maybe cut down on really acidic foods until your appointment.