I've also found myself unexpectedly as a single mum with teenagers and boy am I glad I kept my career going, it really was hard work in those early years when they were little, but the alternative, to be looking for work right now having taken years out, with two teens who need support, doesn't bear thinking about. Having a career gives our household a good income and choices that otherwise we would not have.
Your husband needs to step up and work out how to facilitate your career for these next few years. If he's sexist and doesn't want to do that, then even more you need to not quit! Me and my husband took it in turns to take mat/pat leave and work part-time with each child, moving back to f/t when they were aged 2. It is hard, and I had some family support as well.
I know lots of women who have had to be the main wage earner at one point or another, due to recession (including in Covid-19 when husband suddenly lost job), divorce, widowed, the husband retired, the husband burned out and changed direction, there's just so many reasons I wouldn't want to rely solely on one wage going into the future.
Also, I love my job even more now, I always liked it but now mine are teens, I'm senior enough to have quite a bit of flexibility and focus on it when I can. I think this would happen for you too.
It's great so many women medics have contributed to this thread to give you other ideas of how to stay in medicine.
Ultimately though, it's about whether as a family you equally support both your careers and dreams about the future, or they get invested into only one person (your husband)- how is he going to make this work for you in the next 3-5 years and perhaps he needs to make some sacrifices, not you sacrifice everything.