Can you hire someone for just one or two days a week? Try care.com, and explain the situation as a temporary thing, but you're looking for someone who can drive you to and from work/ or dr appointments if they happen to be on either of those days, and do a little light housework, in between drop off and pick up.
Ok, I'm feeling a little better. H called to ask me a very specific question and I was like "do you have a minute?" then proceeded to unload on him. Basically he's been doing that thing where he says he'll do anything I want, but then he doesn't do it because he "didn't know it needed to be done." I told him that I need him to: take the dog out, make dinner, do laundry, and go grocery shopping. He said, "ok, when?" I was like "whenever it needs to be done." Sigh. But if giving specific instructions is what I need to do to make the next few weeks bearable, then that's what I'll do. As long as he doesn't accuse me of nagging.
The thing that's so nice about my mom is that she is a nurturer by nature who anticipates my needs so that I don't feel like I always have to ask her to do stuff: she's always bringing me ice for my ankle, a glass of water, or a snack. But this is clearly wearing on her, so on to Plan B.
I'm glad he'll be stepping up.
I would reiterate to your DH (when you are both calm and logically minded) that you are not the president of the household and he is not "just the help". Your house has two (sometimes three) adults and they all need to be thinking preemptively about what needs to be done next, planned, figured out, etc. The baby is a FT job. Your job is a FT job. Your house/pets are a FT job. And frankly, your body now AND when you are post-partum will be another FT job - at least, it will feel like that. And your mom's life outside of your house is a FT job.
Right now, it sounds like there is a setup that you and your mom are and will be responsible for more than one of those FT jobs, while your DH thinks he is expected to do only his day job and then "help" with the house. So I would tell him again that you are not going to a manager who delegates jobs to others, He has to come home and do the FT job of housework, dinner, baby, pets, etc., everyday, along with you - not as a substitute when you are too busy to do them all by yourself. Sure you guys can communicate about it, but it should be in the form of "does this still need to be done?" not "would you do this" - ideally.
I'm just spilling all this out to you now because this was a big transition for DH and I for like 2 years and many many couples go through the same thing and it can get ugly fast and stay that way for a while. A big part of women being equal in the workforce is having men who are equal at home, and right now he needs to be pro-active at the FT home jobs just like he would be at his day job.