Naw, you didn't make a mistake, Sweet!
Ingrown toenails can go
really bad! I had one in high school, and by the time I was practically crawling on the floor and screaming for a bullet (which is when I am typically motivated to
actually seek medical attention) it had gotten WAY infected and had turned a very bright shade of plaid and was oozing this yucky
DANGER:
Do not read any further if you get queasy easy, or have had beets for lunch
stuff and had swole up to the size of a large radish.
I was fascinated in spite of myself. Anyway, the doctor decided to cut off a big ol' hunk of the tissue (I got to watch) and then, a week later, he decided to do the same thing you're talking about, with the acid.
This was 30 years ago. I understand they use lasers and wolverines now (this being California, ya know.) So basically, you're very fortunate that your doctor is using the old tried-and-true acid treatment. Because my toe is just a peach, and the nail looks very nice.
Of course, that's 30 years later.