Nikaah & Marriage Issues

Q:

1. Should a nikaah be performed on a Friday say after Jumma salaat can the walima has be held on the Sunday?

2. Should the groom not have enough finances to host a walimah, can the boy and girl have a joined function where expenses are halved and both parties contribute?

3. Should the groom not have finances can just the walima be held?

4. In today's time there has come about a thing of reception which is held after the nikaah but before the walimah. Is this allowed ? And should this be allowed? Can it be that there is a Friday nikaah and Saturday reception but with no walima?

Q: If a lady is expecting, is it permissible to find out the gender of the baby?

Q: If a father looks at his daughters private part without lust, does it constitute hurmat-e-musaahara?

Q: If a husband not working at the moment. He pays the bills and mortgage still. If  the wife wants to buy clothes for herself and kids, can she ask  her husband or must she use her own money which she earned from little a job but that money the wife wants to save for her kids future for Islamic studies. What must she do?

Q: If a female looks at a male's private part with lust but she did not see his private part directly because the man was wearing a cloth, his body and his private part was covered with a cloth. Is hurmat-e-musaaharah established? Please answer the question. What is the private part and awra for a man?

Q: Since the time when my wife gets pregnant, since then she feels intense pain in vaginal intercourse. We have treated for it a lot but no medicine is useful. Last time when my wife got pregnant I managed somehow to live without intercourse for 10 months (during his pregnancy) but this time its not easy for me to control myself from intercourse. But in vaginal sex she suffers unbearable pain so is there any way that I can do anal sex for my pleasure as well as for her sake. Please guide me what Shari'ah says in my case.

Q: My question is that is it jaaiz in Islam not to marry a Sayed or Qureshi or shah type girl or boy with someone from another caste? Please give me a detailed answer about that.

Q: Is it allowed in Islam for a one year old baby girl to do dress modelling?

Q: If I marry a Muslim male who skips namaaz, will my nikaah with him become invalid?