Partner is driving me to despair...

My partner is an adult in her 40's and has diagnosed ADHD.

She is on meds (ritalin generic) and wants to have a baby. I have to do most of the housework as she either can't concentrate, sees it as beneath her or is just lazy, the effect is the same though, I have to do it. . I despair at the thought of all the work that having a baby entails knowing that she will probably do less and I will have to do most of it.

She is hugely argumentative and drinks far too much. I am thinking that if she shouts any more and points her finger at me I will say enough, you're dumped.

Problem is I love her very much. Any help gratefully received.