Could my 5yr old have Autism

My five year old son was diagnosed with ADHD, OCD, ODD and Anxiety last year after he was BAKER ACTED for saying he wanted to kill himself. They started and currently have him taking Zoloft 25mg and Metadate 10mg, they are not working. When he takes the two together whether at the same time or at separate hours he is worse off then when we started. It seems like they counter act each other. If I give him just the Zoloft, then he is fine, his anxiety is down and less violent, but climbs the walls and has to be given a benadryl to calm him down. If he is only given the Metadate then he is not as hyper, but very dangerous to be around when he "snaps". He was suppose to start Kindergarten this year, but because I don't feel he is safe to be around or even ready I have chosen to home school him instead. The psychiatric that he sees won't give him anything other than Zoloft and Metadate...though he did mention Ritalin (which from what I read could make him more violent). I need to know of what other meds are out there that might help him so i can at least suggest them to the doctor at our next appointment. I am also wondering if he could be autistic, no one has tested or will even think about testing him for it. I have be told by several people that it could be he just has Autism. I know my little guy will never be "normal" but I wish for him to at least be able to function in life without having to worry about him hurting himself or others

[enzymelover]

Please don't believe your son can never be "normal". I thought my son had Oppositional Defiance Disorder when he was three and four years old, after learning about it at a parenting class  for difficult children. Also OCD. Four years later, I learned he had a food allergy and other serious digestive and organic problems. He had a few behaviors "like autism", but he just didn't fit neatly into any description of a labeled condition.
   I would recommend you read the book, Biological Treatments for Autism and PDD , by William Shaw,Ph.D.  ISBN  0-9661238-1-6   Also,  Enzymes for Autism and other Neurological Conditions ,by Karen DeFelice   ISBN 0-9725918-7-7
  These books opened my eyes and helped my son recover some "normalcy".  The information in these two books is astounding. I don't think you'll be disappointed.
  Good luck to you.

Enzymelover