Anyone else?

I'm 5 weeks pregnant my daughter just turned one any one else have baby's that close together? How do they get along? Did your oldest like the new baby? I'm kind of freaking out my daughter is mean she beats on our dogs and cats. Also she started biting but it's just me she draws blood too I sit her in time out but that don't help much. I'm just worried she will hurt her sibling when the baby gets here. Any advice or help to put my mind at rest I know I have a wile to think about it but its just on my mind.