My husband has ADD and now I have depression....help!

Hi....my husband and I have been married for 8 years and it has not been an easy road.  I knew he had ADD when we got married but never really understood or realized the severity of it until we had our daughter two years ago.  As soon as we came home from the hospital I was basically alone with her day and night and it was exhausting physically and emotionally. I needed his help....but he was unable to give it (saying that "his challenges" make it hard to do the things I need....which wasn't much to begin with).  I am an independent person, always have been, so I do not need a lot of "help" from him on a daily basis.  I handle all of our finances and am the handy person in our house.  But after having our daughter I truly needed his help for the first time and he could not see past himself to help me.  Never once did he wake up in the middle of the night.  He only took two days off work (the two days we were in the hospital).  Most of the time I never asked him to wake up with her, I figured I would let him sleep since he had to go to work.  But I see now that it let him off the hook for any responsibility with our child....or with me.  I would cry and tell him I needed him to just love me and he would look like a deer in the headlights.  Long story short- I fell into depression which has turned into me being pretty much hopeless in our marriage.  He says he wants to do what it takes to make it work but I am not seeing any action- only empty words and unfulfilled promises.  I am getting fed up.  I wish he would take me seriously when I tell him I am depressed and that I am exhausted in every possible sense of the word.  Has anyone been here?  What can I do?  I just feel so hopeless...