This was my son at the same age. An amber teething necklace stopped the whinging (seriously, he had improved within the day) and the rest of it was just a long frustrating stage that we had to go through that felt like it was never going to end.
The good news is he is nearly 2 1/2 now and he is the sweetest, most beautiful little boy. My mum watches him when I'm at uni and she tells me and everyone that he is the easiest kid in the world to look after, and he is. He still bites every now and then, but far less than he used to and it is always when he is teething (he is a very slowly teether..only getting tooth no. 14 now).
I have no advice on how to help you now. DS was a nightmare of a child and I wanted to pull my hair out constantly. But it did end.