CA as well here... Pregnant at 27 ( Yes, oops at the time!), once I got my head round it, cracked on and qualified first time within the 3 years.
How? 3 months Mat Leave and a shed loads of (carefully chosen) childcare costs, as I was a lone parent from day one. Being younger had the energy to work hard all day and study at night. Could not do that now!:)
As a PP has pointed out, probably easier on your career earlier on, as there are more resources to draw on at your same level within the firm.
No regrets - 18 years later and both me and the kid are flying, with a few more good years of me working at a very Senior Level still ahead of me, with the benefit of solid experience - in a really strange way I feel like I have grown 'younger' being early 40's with a near adult child and the independence that brings!
The biggest decision for me I would say, was timing the move from Practice to Non-Practice ( if that is in your radar). Newly Qualifieds sell like hotcakes as a PP noted , so anything within 5 years still gives you the 'tag' as current with latest standards etc
Still, a hugely personal decision based on individual circumstances, but just to say it can be done, even better if you have a supportive partner. Good Luck and best wishes 