Re: married but didnt let the S.W know please help
Your DA should have been re-assessed when you married as your husband was working (it's a means tested payment).
It's likely that now that your husband has made a claim, your own claim will be re-assessed and SW will be in touch with you. If you have to repay money, it doesn't have to be in one amount, it can be deducted from future payments.
I'm not sure what housing benefit you're on (rent supplement?), but yes, that should have been re-assessed too when you married as your husband was working full time. If it is rent supplement, call into your CWO and have a chat with him/her.