All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The jurists stated that a husband is obliged to provide a separate accommodation for his wife and spend on her and her children in reasonable terms. For more benefit, please refer to Fataawa 84608 and 85593.
Therefore, if your husband fulfills the obligation of providing an accommodation for you and spending on you and your (future) children, then he has indeed performed his duty.
The fact that your husband bears the expenses of the house while his brothers and sisters live in it and he pays the expenses, then it may be that he does so for a certain intention or a noble purpose, like being kind to the kinship, or that he knows their need while you do not.
In case your husband prevents you from any of your rights which you are entitled to, then you have the right to ask him for it. In case he refuses and you find that he has money, you are permitted to take from his money according to what is reasonable even without his knowledge as the Prophet advised Hind Bint ‘Utbah to do so with her husband Abu Sufyaan. For more benefit, please refer to Fatwa 85361.
On the other hand, there is a difference of opinion among the jurists about whether or not the expenses of the wife’s delivery is an obligation on the husband; the view we consider to be the preponderant opinion is that the husband is obliged to meet these expenses. Al-Hattaab said in his book “Mawaahib Al-Jaleel”, which is one of the books of the Maaliki School of jurisprudence: “The book ‘Mukhtasar Al-Waqaar’ reads:….a husband is obliged to meet all the needs of his wife at the time of her delivery, like the fees of the midwife, whether she is still his wife or has been divorced.”
In conclusion, if your husband fulfills what he is obliged to do towards you and his (future) children, then you are not right in being angry with him because of what he gives to his family. It might be that Allaah will bless him in his money, family and children due to that, so you should be careful.
Allaah Knows best.