Behavior problem or normal?

Ma

I am SO worried about my January 19 child. He is SO aggressive. We’re not in daycare right now, it’s him his 3.5 year old sister, and a newborn with me and his dad at home. When he doesn’t get his way he screams, throws things, hits, and tries to bite. He is being evaluated for speech delay in the next week. But I am so nervous about his aggression. Is this normal? Thanks!