Using Safewords all the time

I mentioned before that sometimes I forget my safewords.

Lately I find myself using my safeword even when we arent in a scene. I think it frustrates Smurfer a bit when I do it. I do it because we've decided in play that me saying 'no' doesnt mean stop. So if we're in a situation outside of a scene and something happens that I want to end, I automatically say my safeword. It's to let Smurfer know that I'm serious and want whatever is happening to stop.

I know its leading to overuse of my safeword but what else can I do?

If No doesnt mean No ..something else has to, in scene or out.

I need a better way to communicate my feelings, but how?