If your husband is low income he should apply for Working Tax Credit, Housing and Council Tax Benefit - this will help your husband to pay rent to your house/flat etc.
How many weeks are you pregnant now? Because if your husband is entitled or in received of Working Tax Credit he can claim a Sure Start Maternity Grant.
You said, you gave your work up just because you felt sick? Does your GP knows you are pregnant? You should get an advice to your GP or Midwife about your pregnancy, this is free!
Your husband is automatically entitled to claim a Child Benefit from the day your child was born.
And as I said above, If your hubby is low income then tell him to claim Working Tax Credit, once he received this benefit he can then claim a Sure Start Maternity Grant (£500 Grant per child), and once your child was born he can claim a Child Tax Credit.
Your husband must be the claimant and he must put your details down on every benefit he is claiming...and this is won't affect your ILR application in the future.
Tell your husband to use this calculator to help him work out his entitlement to benefits and tax credits.
>http://www.entitledto.co.uk/default....8-c14106caba3d
He must act ASAP or he will lose his benefits!