Looking after one's father

Q: I have a problem kindly guide me. Our one home is at a certain village where my father and mother lived before the death of my mother. Now after the death of mother, my father lived there alone for few days. I am too worried about him and feel that I am very sinful because my father lives there alone. I asked him not to live there but he does not want to listen. I am working in Gujraat as a lecturer in physics at govt. zamindar college gujrat, so most of the time I will not be able to go there with him there. I feel very guilty and my father does not realise this. He loves to live there alone. I told him that I will get transferred there but he said no you do your job at gujrat. I feel that I am committing a sin and remain worried about him. Most of the time I feel that I am not doing his khidmat properly.  I asked my father many times to sell the house of Sheikhpura and live with me at gujrat but he does not like it. I am in very critical situation, I always feel my self guilty due to this, kindly guide me what I should do?

Irregular bleeding

Q: I have what I think is a huge problem especially with the holy month of Ramadaan coming. I am a married woman who was on the 3 month injection/contraceptive for 4 years, this made me gain weight so I decided to go off the injection and went  on the loop instead. This was in November last year. Since i'm on the loop I've been spotting/bleeding (not a real menstruation) but the sister told me that it would take up to +-9 months to work out. My question is, with me spotting on and off when and how do I know when I'm clean enough to perform salaah and also fast in the month of ramadaan if this continues? When I say I spot on and off, I spot a whole week and clear for like 3-5 days and just continue spotting again. Please advise as to what and how I go about this.

Mobile games and music

Q: I have formed a company of programmers and developers to develop mobile games and applications. There are three sources of revenue:

1. Sell the game.

2. Make it free and gain revenue from advertisements in the applications and games.

3. Keep it partly free and partly under sale (in app purchases).

I have ensured that my apps and games will not contain anything vulgar or shameless. However, they will contain music. Is this permissible?

Tissue valve replacement

Q: My mother has a heart problem. She currently has a mechanical valve (st Jude's metal valve) and the problem is she gets admitted into hospital every 2 weeks due to high blood levels and clotting of blood all over her body. The doctor said that if she replaces the mechanical valve with a pigs tissue valve she won't have that problem again. Is it permissible to use it for medical purposes?

Blood remaining within the circumference of the wound

Q: After shaving my private area there are very small cuts like little pricks. When I dab them with a tissue sometimes a little dot of blood appears and sometimes not. After making ghusl I apply oil to my body including private area I cannot be certain if it is bleeding after ghusl or not and if I have smeared the blood or not. Does it matter if it is smeared or not,the cut is like a prick of a pin and only a small dot of blood appears sometimes when I dab it.