Do you actually want kids? Soon would be a good time to start-biologically. It might not do your career any good-but women get past that all the time. You have a little over a year before you are done with thesis (if all goes as you plan. Don't get too comfy with any plans you make).
I had a baby at 33. No biggie. It's not really old in this day and age-but its also a good time to get on with your biological plans. Do not try to get through a pregnancy with 2 jobs and your final classes/thesis on the line. If you can't stop working, you really don't have time for a baby anyway. Prioritize your life-its more than just your thesis. You don't/shouldn't work 24/7. You will retire in 30 years and it will be too late for kids.
Can I suggest a simple test from your doctor to measure your fertility levels/baby readiness? I don't think it is exhorbitantly expensive and it will give you an idea of if you have the luxury of time in this.
What do you want to do after your thesis? Anything exciting or particularly challenging? (now I am just being nosy and interested in you!)
The worst thing about pregnancy after a certain age is having it called a geriatric(!) pregnancy. Oy!
If you quit work when you are doing your thesis, I don't think a pregnancy would be that overwhelming. Don't try to do that and your job(s). I know women who have gone through residencies and/or medical/law school while raising a family. Don't count out the idea of a thesis after or during a pregnancy or while raising a family.
You are doing awesome this far! I see no reason why that would not continue with or without a family.