I have a few thoughts.
One is that if you have specific concerns, feel free to ask here. But be prepared to have others give straight-up answers that may not be what you want to hear.
If you don't have specific questions, but more of a general feeling of being overwhelmed, then have a frank discussion with your husband.
This past spring, I had some very stressful work deadlines coming up and I knew in advance I was going to be totally overwhelmed. I sat down with my husband, told him about the deadlines, and asked him to basically be the primary caregiver for the kids for the next 3 months - make dinner because I was going to need to work late, do bedtime because I was going to be exhausted, plan activities for the weekends because I wanted to have fun with my family, but wouldn't have the time to actually do the planning during the week. It worked and got us through the period with minimal meltdowns (by me).
You may not have a specific deadline or event causing stress, but I think you could have a similar strategy of thinking about exactly what you need your husband to do that he's not doing now, then sit down with him, explain that you are overwhelmed and ask him to do those specific things from now on.
I also think that finding a therapist would help. You've mentioned that you are a working mom - many employers have an assistance program with exactly this kind of support service, and usually you can go to them for some number of free visits per year. Ask your HR.