Brushing teeth to much

Hi sorry just totally random hoping somebody had the same.

Recently started using Fluoride sensodyn and I had no idea you could "brush your teeth too much" now my bottom teeth have little white spots inbetween them and feel rough. Only have been brushing with this toothpaste for 5 days.

Does it fix itself when I stop using it? Or do I have to go to the dentist?

Just wondering for experiences before I go to the dentist and they are like why are you here 🤪

TIA!