Its hard with 2 under 2 - I sympathise completely. I've lost the plot plenty of times, and always at DS - just cos he's easier to yell at I suppose (even though now he yells back at me!)

Take a deep breath, make yourself a cuppa, and when the baby is asleep - have some special boy & mummy time - tell him you are sorry you yelled at him, and do something he loves doing, cooking, drawing, puzzles - whatever.

Its hard hey..