Hi there, I'm a midwife and trained in my early thirties with two very young children, I had the full support of my now STBXH and it was a tough three years.
Trust me, the training is extremely hard work, you will be studying for a degree whilst undertaking full time clinical shifts. The course is very academic, it is not all about cuddling babies!
Even the young and fresh midwives these days are suffering from burn out after just a handfull of years practicing. The pay is pretty average/poor for the level of accountability that you will have. The shift patterns are generally awful, think, chopping and changing between nights and days in the same week.
Also, dont forget that training is no longer paid for by the NHS so you will have to pay Uni tuition fees of the usual £9k per year and you will not be classed as a 'student' or 'employed' for the purposes of any benefit entitlement or student loans (this is what i've been told by our current students).
Unless you absolutely think it is the ultimate dream and you dont care about all of the above then I would look for something different.
Sorry to put a dampener on it but it really is a challenging career choice!