I am worried about my son. He CRIES all the time. He whimpers constantly especially if you tell him no or take something from him. He is physically antagonizing at school and spends a LOT of time in the principals office. NOTHING reaches him! If he gets a no he will continually ask until he gets me so mad I have to yell at him or threaten to whoop him. I have been in tears for so long over this. He had a doctor that put him on Risperidone and it tamed the constant motion, but his behavior continued to be impulsive! PLEASE HELP HIM AND ME!! I am so sad and worried. PLEASE??

I doubt that he understands or can control his behavior, and that's one reason he cries. He needs a specialist in childhood mental health, and once properly diagnosed and medicated, he needs frequent visits for therapy and drug monitoring. He could have anything from ADD and hyperactivity to schizophrenia to food allergies. He could need to try different medications.
I have a friend whose daughter was hyper, scattered, and infantile until the minute she hit puberty. Everything that was tried hadn't worked, and she changed completely without anything. Much of our brain chemistry is still a mystery.

It's pretty young to be diagnosed with schizophrenia. That doesn't usually occur until the late teen or early twenties.

Risperidal/Risperidone is usually prescribed for schizophrenia, and should NOT be prescribed before the tender age of 13.

It is my educated belief that you NEED to find another doctor. Risperidal/Risperidone should NEVER be prescribed by a PCP.

I agree about Risperdal (no I in the brand name) from a PCP. But although rare, children can have schizophrenia, even with hallucinations. I watched a show on a very young girl whose parents had to live in separate houses for the sake of the other children, who took turns with her, who had contemplated suicide because she is so hyper, needy, and often terrified. She lives in a city of many research and teaching hospitals, and even has a friend her age with the same disease. She is heavily medicated and it barely slows her down. Her father took a tenth of what she takes (to see what she felt) and conked out, unable to move.

I would say the most series problem is always getting the word no. There are better ways to parent a child then saying no about everything. Life and growing up is about given choices and the opportunity to have choices in his life. If your constantly telling him no or taking things away. This is not teaching your son anything. Yelling at him and threatening to whoop him is another major issue.

He needs positive reinforcement. He needs to be praised about the good things he does. Also instead of no, give him choices. Let him chose things. Give him opportunities to respond and listen to him and be open to communicating with him instead of always demanding things, taking things and yelling and threatening.