I wound my film in the wrong direction mid-roll. Did I ruin the whole roll?

Most cameras can only be wound in one direction. There are a few basic cameras that can be wound in either direction. I suppose you have one of those cameras that can be wound both clockwise and counterclockwise.

Changing the winding direction part way through the roll is going to cause problems. When you change direction, the film will stop advancing as you take each photo until the slack in the film can be taken out in the opposite direction.

This will cause you to lose one or two photos because that section of film will have multiple exposures without being properly advanced. Once the slack is taken up, the film should advance normally again, but the film counter mechanism, (if you have one) will not be accurate anymore.

Reversing the direction of the film mid roll may also cause some stress to the film itself. That could possibly affect the image quality in some sections of the film.

I don’t think you have ruined the entire roll, but I doubt “all is good”. I think many of your photos will still be okay. My advice is to continue taking photos, and don’t change the winding direction again. Finish the roll, and then rewind normally.