Of course you can use a white cane since I started to go to unuversity I've been using it too as a visually impaired person.

I would even advice using it. It can be useful in many situations although people will look at you differently and I understand it feels bad for some but it's not neccesseraly bad because people tend to be more helpful if they see your cane.
Oh and people will look at you differently without a cane as well if you have problems with navigation they just do not help because they think you are simply drunk or something.

In my experience a cane is most useful in crouded areas even if you know the place. You won'f bump into as many people because when they see your cane they are more careful about you and even if it happens you won't be the asswhole for not seeing them