dont brush your teeth "real hard" brahh
that aint gonna help. You'll brush the enamol off those chompers.
Which sounds like that's what u already did.
The mouthwash only exposed what was alreay there maybe??
Same shit happened to me like 2 years ago. I noticed after using this mouthwash i had this small brown mark on a tooth toward the back of my mouth. I thought "fuck i got a cavity" and went to dentist. . . dentist told me it wasn't a cavity, but an area where the enamol wore off cuz I was brushing too hard. He had to like put this bonding over it.
I'm really particular about having nice teeth.
My parents spent too much money for me to not keep them perfect.