I don't love my son.
Why do you feel that way towards your son?
He's so different from me, I don't feel a connection to him.
That is unfortunate to hear. Sometimes families fall out and never recover, but always remember that they are your own family. You should give them a chance to see and accept them for who they are.
I think my wife likes him more than she likes me anyways.
A mother would always put their child first. It's nothing personal but it's important for you to love your son too. If your mother is able to love him, then you might be able to find other ways to love him as well.