Emotional instability

Lately, my emotions have been getting the better of me. I had a terrible anger outburst today, in which I totally lost control of my emotions, in front of a great deal of people. I was yelling and cursing at someone, who definitely provoked me, but did not deserve to be spoken to like that. I totally lost control of my anger, and this is something I do not do often. Of course, I cry a lot, and get depressed, off and on, as well; but I've never lost control of my temper like I did today, and I find it very disconcerting. I will not take meds for this, as I am a pretty active, doubles tennis player, and cannot play when I'm on drugs. Does anybody else find that their MS, effects their control of emotions, and anger?