Sounds pretty normal based on your potentially forthcoming diagnosis. My wife who has the same problem helped me to learn that part of what she deals with is that the first thing to come to mind often is the first thing out her mouth. This isn't always a bad thing but mix in a dose of emotion, what is said can easily not be what is intended...there's a shocker for anyone! What she learned to do is to stop before she speaks...that combined with my understanding (read acceptance) of her makes it generally work out. i'd love to tell you I am always able to do this, but with practice its very possible.
Good Luck,
Doug