vstressed - just been reading your post and thought i would share my own experience.
i was on ad's for years, they put me on everything (and i mean everything). IME, ad's don't solve a problem, they just hide it. as for taking sleeping pills with ad's, if you are struggling with sleep then i would ask for a tranquilizer to take just before bedtime. however, that may mean you're not awake or alert enough to deal with your baby if you have to get up in the night, which means that your DH has to deal with it and ends up piling more onto his plate.
don't get me wrong, i'm not "siding" with him, just trying to see things from his point of view. if you have hit him in the past, and seem unreasonable, then i can kind of see why he would explode at you, especially after driving for 4 hours! i think you need to chill a little, take some time to yourself once in a while. is there anyone who can look after the baby for an hour or so while you have a bath, or a walk or something?
i don't know your whole situation, and i'm not married (yet) nor do i have a baby (again, yet!) but i DO have a lot of experience with ad's, and i would say that the best thing i ever did was come off them.
hope this helps, and that you get a bit less stressed!! xxx