I completely understand your predicament.
The trouble is if you have a baby during your studies there is a big chance you’ll have to put your studies on hold or just not be able to complete them.
It would also mean that by the time you got round to finishing them you would most likely be in a position to want to have a 2nd child and then you’d be in the exact same position as if you’d waited to have your first.
I’m not a doctor but I trained to be a teacher and I found the actual training very difficult because not only are you in uni/placement full time but you’re also doing assignments in the evening and weekends, so it was non stop.
I understand your worry about your age but many people have children in their 30s.
I personally think that you should complete your course (it’s only 3 years).
And then TTC.
You could even start TTC 7/8 months before your course ends so you can hopefully give birth not long after.
If your DH is able to support you and your baby, it means you can just focus on being a first time mum and not worry about uni assignments or placements or going back to work after maternity leave.
(You can do some online training or volunteer work too if you wanted to, which may be beneficial to your career in the long run).
Once you’ve had the baby then give it some time and then start applying for jobs.
You can then work a year or 2 and then TTC your second baby and get maternity pay.