Assalamualaikum

Yesterday I was having a fight with my mother and it got to a point that my father had to come and break the fight and during that time while in anger and crying I said if she says I'm a kafir should I stand there and say yes I am a kafir? The fight ended and I apologized to my mother but due to me saying such words I'm very scared that am I out of the fold of islam. Please answer my question and tell me am I out of the fold of islam? I'm very scared and I honestly don't know why I said such words and now I regret them very much and I am very scared. Am I out of the fold of islam??