Starrry I agree with a previous poster that your DH really should get checked out. Who is to say that the problem (if there is one!) is with you? It could very well be a problem with him!
I know it's hard if he doesn't seem to want to engage, but most specialists will only treat couples (ie. Not one half of a couple). I am not sure how old you are but you don't want to waste too much time only concentrating on you without looking at DH as well.