Making tawbah and then repeating the sin

Q: I think I have some form of OCD so I constantly worry /doubt what I do. I used to live a careless life and have wanted to changed my ways so I did. I am trying to now be a better muslim. I read the prayer of repentance asking for forgiveness but when I was say ameen at the end a bad thought just comes into my head. With my OCD problem this happens a lot.

1) Did my namaaz still count?

2) If a person repents and asks for forgiveness then promises to try to be a better Muslim and tries not to make the same mistakes and makes a mistake will they be breaking their promise? I ask this as I am still young and I want to be practical. I mean if the person promises to try and its human nature to make mistakes then they wont be breaking their promise right?

3) If a person promises to never make the same mistake again but then realizes that it is better to promise to try to never make the same mistake again and says that, will the first statement be overridden? Because I think it is better to promise something that I know I can do for sure rather than be unpractical and think I will never make another mistake in my life because I want to strive to be better than I was before but I don't want to break a promise, so is it valid to promise to try instead? Did my namaaz count?

Surrogate mother

Q: We are married for the past 9 years. We have no kids. We tried for all possible treatments including IVF but no success. Medical problem is in my husband and me too. So if my husband does a second marriage still he is unable to conceive naturally, then will surrogate mothers be permissible in our case. We want to do his second marriage and do surrogacy with her, if allowed in Islam. I have read a lot about surrogacy that it is not allowed but in our case when naturally we cannot have children and our relationship is disturbed a lot due to this lack of kids, can we do surrogacy.

Insulting Rasulullah (Sallallahu Alayhi Wasallam)

Q: If someone insults the Prophet Muhammad (Sallallahu Alayhi Wasallam) then should there be any punishment for him, looking at the fact that he did not kill any innocent human being, and as Allah Ta'ala says that we should forgive anyone who says bad words to us, and we should reply with Salaam? I need references from Quran and the Saheeh Hadith, only then I will believe.

Women wearing pants and shirt

Q: Does Islaam allow women to wear pants and shirt? If not, then can we wear it in front of our husbands? How about our blood-related sisters or female cousins? Also, are there any type of clothes wives can't wear in front of their husbands or can we wear all types of clothes?

Nifaas

Q: I have heard that a woman is napaak for 40 days after baby birth. What if bleeding stops after 3 weeks? Is she still supposed to be napaak for 40days?

Zakaat on jewellery

Q: I was always thought that zakaat is paid on jewellery irrespective of whether it is used or not. Recently few people have insisted that no zakaat is paid on jewellery if it is being used. They claim you only pay on jewellery not used more than a year. Is this true? Please clarify so I can correct them.

Making wudhu in a combined toilet-bathroom

Q:

1. Should I try to remain perpetually in the state of wudhu even if it entails making wudhu in a combined toilet-bathroom multiple times a day? The toilet is very close to the sink.

2. Is it correct to bring a Miswaak into a combined toilet-bathroom in order to just wet the end of the miswaak if this is also done multiple times a day? The toilet is very close to the sink.

3. Please advise if there is any change to the rulings in questions (1) and (2) if the sink was not very close to the toilet, but still a combined toilet-bathroom.

Settling the debts of the deceased

Q: After my father passed away, I was aware of a debt of my fathers that had not been paid. After enquiries, an amount was determined and before sharing out the estate left by my father the debt was settled to the inheritors of the other party. All parties agreed to the amount. My question is; will this mean that the debt has been settled and that my father's burden has been lifted.

Marrying a Hindu

Q: Please can you advise what the ruling will be if a Muslim female is to marry a Hindu male. The wedding will be conducted under the Hindu rites. Is it permissible for the her mahram to partake in the ceremony?