Doubts regarding purity

Q: I have always been very doubtful and may have OCD so now I am trying to overcome this illness but I can never know what to do. I have a cold so my mother told me to take some steam it was from a pot that was from the previous owners of the house. They said they were Muslims but many Muslims here eat non halal meat. I don't know if the previous owners 5 years ago ate un halal meat or not. but they left a dish which my mom uses when anyone needs to take steam because she doesn't want the sick germs to go into her cooking pots. She has washed the pot before but I don't know if she read the kalima while she cleaned it. If I took steam from this dish am I napaak? Is the towel I put over my head while taking steam napaak? I have touched so many things after that are they all napaak? If I used the towel after wudu to wipe my face before praying did my wudu break and did my namaaz count? On the dish there were some orange/ red marks and took some very hot water from the dish and a kitchen towel to wipe and see if there were permenent but they came off. Now I don't know what they were from and if it was halaal or not and if I made the kitchen towel napaak? My mum thinks I'm crazy so she won't believe me about washing the towels because I am always making her wash everything but I just don't know what to do? Is the kitchen towel napaak? If someone uses it to dry their hands will they become napaak too? I am too stressed out about these and it is really hard for my recovery from being a doubtful person what do I do?

Wife going to live on her own

Q: If a woman leaves the marital home without any sharee reason and goes and finds her own place to live. The husband has not given talaak and feels he wants things to work however the wife is adamant she does not want the marriage. There is also a minor son involved. Is it the husbands responsibility to pay for her rent etc for she moved out of the marital home on her own accord and without any shared reason?

Zakaat of previous years

Q: My salary is 6500 qatari riyals among which I keep 2000 and the rest I give to my mother. From this 2000 in my bank I have around 24000 qatari riyals till now and I am working from 3 years. So should I pay zakaat and how to calculate it? I am 21 now and I never paid before but I realize I must make sure my money is paak and halaal. Please guide me.

Revoking talaaq

Q: I would like to know that since my husband uttered once and after that event we were together at least two times under the same roof, then we had an argument and we have been apart for 3 months. Does us being together after that talaaq incident void that talaaq or the husband has to say clearly to void the talaaq? Or since we had another argument after the talaaq and after being together twice after that, does the iddat apply and is another nikaah necessary?