When to finish up work?

Question

I work in a busy fast food restaurant and I’m planning on resigning and being a SAHM for 1-2 years, instead of going on maternity leave. 
But I’m just trying to work out when the best time to leave is. I’m already 24 weeks and I’ve had to slow down a lot recently as my body just can’t keep up so I’m thinking between 31-32 I’ll finish up. Does this sound reasonable? 
When did everyone else decide to finish up at work? Is it something only you and your body really know when it’s right?

Answer

I asked my doctor when I should finish, and he suggested 32 weeks as I’m having twins. I think most people work up until baby is due, partly because that’s a better use of maternity leave, but if you’re not taking leave it doesn’t matter so much. If you don’t need the money, I guess you can stop whenever you like.