My 15yr old has problems but won't talk to us about them

Hi, this is my first post, hope someone can advise.
A few months ago my son had a girlfriend who broke up with him. He was very upset but unfortunately at the time we were having a lot of auguments over the amount of time he was spending on his lap top and I had just agreed to give him it back to do homework but found him instead on facebook. We had a big augument - he said he needed to contact his girlfriend who was breaking up with him . Unfortunately I thought he was just making up an excuse and took it off him. I later found out he was telling the truth and although I have apoligised he refuses to accept my apology and says he is never going to tell me anything again. Then he told us that he had problems but would not tell us what they were but would only say that he had talked to friends . My husband was very unsympathetic and they ended up having a shouting match .
Now it appears that my son still has problems but won't speak about them and my husband is more concerned with being "authoritarian" and taking his lap top off him than he is with whatever may be worring our son. When my son said that he couldn't wait to leave home my husband replied that he would be glad to see him go, Which horrified me, and my husband refuses to take back his words.
I really want to talk to him but because of what happened I don't think he will ever open up to me. The only intimation I have is that it is a "physical" problem but he does not want to see a doctor.
Very worried mum.