D.H.
Hi A., When I first started to read your message I thought this child is going through the terrible twos...but as I finished I'm VERY concerned for both of you and his behavior. You're getting angry is normal and don't think for a minute that his actions are normal. Maybe in a scattered incident but this is continuing and I would seek a special child development teacher, or therapist to observe him in his own environment doing these things. I'm concerned for other people and children as the number of people in your lives grows.
He may not be able to understand the ramifications of his actions and be able to talk "out of it" but behaviorists have answers to stop this negative stuff.
You can do this!! You are in charge, but few of us know the right things to do or say to help you alter the course here. My son has autism and we have used therapists to work on issues of aggression. You are not the only parent with a difficult kid, and that's why the therapists are out there to help us make life liveable.
Your son isn't happy either...good luck. Deb
PS in reading my response it seems harsh, but I don't think having a time out is going to work for biting, kicking you in the face or hitting, pulling hair, etc. I think he will get more angry, no coping skills, no language, a baby?! right? read all you can, and talk to a behaviorist, they are with speech therapists and try Pediatric Therapy Network in Torrance, CA. for referrals.
good luck!!!