Need a shoulder to cry on

I'm not sure if most mummies in here like me,, soon to be mom of 4. My youngest is 4yrs old. I'm not the "lion" type of mom,, but once my children get into my nerve, I'm worst den a hulk. If they did something wrong or doesn't listen to me by the 3rd time, It get to my nerve spontaneously. I will scold and whack them. But after I cool myself down, I will cried so badly, I will call them and hugged them very tightly and while in tears,I will explained myself why I did that and I will apologize to them for doing that.