FranA, don't feel too bad; obviously you were feeling a lot of stress, and blasting forth expletives was a good way to blow off some steam.
I rarely blow up, but I remember once years ago, one of my teenagers got really snotty with me on the telephone, and I slammed down the receiver about 10 times in a row, I could have broken the phone! The other two kids and hubby watched in horror. I think I actually frightened them! But I tell you, they tiptoed around me for days afterwards, knowing that I could actually be pushed beyond my limits.
I can't even remember what the phone call was about, but you know how awful teens can be to their mums.