I agree with taintedpaint.
I do know how you feel, a bit icky, but your daughter will look at this utterly differently to how you are seeing it.
You know your brother is not being U, you know that you are actually being U. Don't say anything to him, don't even let on to him you think anything at all.
He has taken you in, wanting nothing in return. Look around, there are many here that wouldn't be able to lean on familial support.
Are you contributing at all?
I didn't see how long you have been living there, but about a month so far, give or take?
Honey, you need to sort out your own place, you can't stay living with your brother, it's not fair on anyone.
Contact Women's Aid, CAB and the council. It's your number one important issue, to find a roof.
Wishing you all the very best, well done for getting out, now to get on with the rest of your life!