======= Date Modified 21 Nov 2011 10:40:50 =======
Had a similar situation. Received a non-taxable and ( more importantly non -NI ) studentship. UNfortunately I was not entitled to anything as it was not a wage, no statutory maternity pay, or even the maternity allowance. I asked at citizens advice, uni, and also used the benefits tool on direct.gov.
Was trying so hard to submit thesis whilst preggers before baba arrived. Maternity leave policy for PGRs was non-existant at uni until I asked, then they seemingly quickly wrote a draft policy.

Unfortunately we seem to be in alimbo, not a standard student and neither an employee. Now spending every penny on childcare trying to finish thesis, when I would much prefer to be playing with my 9 month-old son!

Having a family is amazing, and hard work. If you can wait til after you've finished your thesis it will be a bit easier, but don't get stressed out trying to finish thesis before "Trying" ah-hem". ( remember there is never a perfect time for having a baby, you will cope)

Sorry its not a more positive reply
Best of luck