Seems like no matter what I do I'm in this alone...

I have now tried for months to get my husband (who has known about his ADHD since childhood) to understand we need outside help and our marriage is in danger. I've brought up counseling which he refuses to do because according to him I should be able to talk to him, not some stranger about MY issues. So I tried reading Melissa's book and told him it would be a good idea to read this after I'm done. He's now had it in his possession for 3 weeks and has done nothing but use it as a paper weight. He either doesn't care or doesn't see a problem in our life together and I don't know how much longer I can keep maintaining this one sided effort. I'm currently 7 months pregnant and don't foresee this as the joyous event it should be. Right now I'm dreading the additional energy I'm going to have to put out. I'm already drained. Quite frankly I give this marriage 5 years before I finally break, but with the child as a future factor, probably less. How do I get through to him??