Just as others already said, if you wear your protection in a normal, proper and discreet way with appropriate clothing and you behave as always nobody else can ever see or tell, and even if, wouldn't say anything. People don't stare at your crotch or your butt trying to find out if you wear a diaper or not in order to blame you, so in my experience this is nothing you have to care for. All such fears that someone might find out are mostly only in your head!
The other point is - even if someone notices, so what? You don't wear for fun, it's not a kink or a fetish, you have simply a clear medical condition why you reasonably prefer diapers instead of wetting your pants and nobody else has any right to judge you for that! Keep your head up and simply enjoy that your protection allows you to live your normal, socialized life in nearly the same way as without being incontinent!