Calm down (I know... hard to do) and make a list of things you need to tackle. I think a you need to talk to a lawyer asap. He will be able to giode thru and give suggestions on how things should be done. I assume you keep records of what you read.
Try to be practical now and dont let emotions overrun your logic. Stay strong. I dont know the laws in your country but I am sure you will be able to protect your son. xxx Kalni