Pregnancy and Parenting

Q: A person has one daughter and two sons. Throughout his lifetime he gave and did more financially for one of his sons and daughter (best of education, flat, car, medical bills etc) whilst doing very little for his other son. Although yes he has given it to them as gifts but from my point of view it does not seem fair to the child left out especially when you consider the child left out is very sickly (ps his medication is free) and how huge the financial difference is. No fund has been set up for the child left out. Could you please comment on this situation so as to ease my mind?

Q: If a mother says to her daughter, "when you were sick I was not so worried about you. But when your brother was sick I was worried to death. See he is a male child and I feared, without him what would be my life then."

Should a mother say all these words to her daughter? Are daughters so useless, although Islam has reached and all of muslims know what our Sahab (peace be upon him) said about daughters. Please tell me what Allah says about that mothers, saying all these words. Does a mother have a right to say anything to children (female), even hurting them? 

Q: I would like to find out whether a water birth is permissible or not, also the lady is allowed to wear a loose top? Please clarify.

Q: At what age is one deemed baalig? From what age does Salaat and fasting become compulsory?

Q: A baby is born after maghrib on a Tuesday. When will the sunnah / mustahab actions on the 7th day be carried out?

Q: I have a baby girl and we cut her hair. At what age should we stop cutting her hair and grow it long?

Q: Respected Ulama, trough the grace of Allah all mighty, my wife has found out that she is pregnant. We are most grateful to Allah, and at the same time we do not want to displease Allah by doing things the wrong way. My question firstly is: Is there any law about a time period were one should not tell others about the pregnancy? Secondly if you can please give some targheeb on what sunnah practices should be carried out during the pregnancy and at the time of birth and the first few weeks? May Allah reward you plenty fold and make your task an easy one.