Help!! Any quick advice regarding aggressiveness?

[3 little birds]

Hi-I need some quick advice about hitting/ aggressive behavior.

My ds is 3. He recently became a big brother and we moved and he started Montessori preschool. During my pregnancy he started to hit me and his older (but very tiny and completely non-aggressive twin sisters-they were 5 at the time). He was also weaning, slowly encouraged by me. I understand that he has been through some serious changes in the past year. I am worried though about his aggressive behavior. He tends to hit if his is angry or frustrated.

Recently at a school function he pushed his sister down for no apparent reason. She hit the ground really hard, but I went straight to him and told him no, that we don't push and why did he push. I realize that I should have gone to my dd and made sure she was okay. Later, I realized that my dh was holding the baby and ds tends to get aggressive when dh isn't attentive to him.

I don't know how to react anymore to his aggressiveness. Any ideas would be greatly appreciated.

[maemaesmama]

Our situations sound similar. My child Lily is 4. She tends to act aggresivley towards her yournger brother Keegan who is 2 1/2. I try very hard to stay patient, amd discuss her feelings, or frustrations. I have read books about spirited children,a nd she fits the description exactally. She by far has more challanging than my other 2 children combined! GD is not working, and my husband today suggested spanking I'm so upset. Why can't I get her to respond to my loving approches? Any way my heart goes out to you. This is very trying. I hope you get some good feedback. I'll be watching ~HUGS~ ~Jess