Just an idea to consider for employment. Either subing at schools or appying for teachers aid or mental health worker or one on one assistant in special education. I think you have plenty of education for the subing and assistant type positions. The pay is not good at assistant levels but gets your feet wet in special education. There are also positions that visit children at homes under guidence of teacher.
Actually it seems like you have a pretty full plate as homemaker but I know what you mean about wanting to participate and contribute in your own right and have your own career.
Your husband sounds like many others in not being very aware of all the aspects of the situation, and not getting the toatl picture about cooperating as a team on an equal basis. I am not trying to put down your husband, as I was as bad or worse, just speak plainly.
Counseling helped some with my own situation. We tried just talking things out between us, which helps certainly but can stall at certain roadblocks. An outsider (counselor) can help break down the blocks. Using a pastor or similiar is a possibility, depending on what you have available & it is normally free, which helps.