Wearing underwear in the state of ihraam due to urine incontinence

Q: My father has a small problem with old age and urine drops. He says straight after he goes to the toilet, about 5 or 10 mins after, he has some trouble with few drops. Then it subsides. 

He usually uses tissue with his underwear for a few minutes after going to the bathroom in case any drops come out and then discards it a short while later. 

He's concerned with ihraam and how would he manage. 

What would be suggested? Is there an option to wear underwear and pay damm? Or is there any alternative.

Husband wanting to reconcile after sending divorce notices to his wife

Q: My maid has a situation. Her husband hit her and forced her out of the house two years ago. Then, two months ago, he sent her two divorce notices at the same and one notice saying that she is of bad character and he wants custody of the children. Now, five days ago he sent a third divorce notice. 

He signed the first two notices but didn't sign the third one. He said he did it because he wanted her to feel threatened and come back herself. 

After sending all three notices with the last one sent five days ago, now he wants to get back together. 

Is their Nikah still valid, or are they completely divorced now?

Husband giving the false impression that he was not married when taking a second wife

Q: My husband didn't clarify about his previous marriage to me in our Nikaah certificate. He mentioned that he was divorced from his previous marriage but after our marriage he disclosed to me that his ex is still his wife and I am his second wife. 

My question is that, is our Nikaah done or because of his statement our Nikaah is not valid? Please clarify.

Asking family or friends to assist one with an interest free loan

Q: I am currently working and looking to buy a car. I am unable to buy it in cash. I have made many attempts for Muslim car dealers to try and purchase the car on credit without interest or going through bank finance. All of them rejected. 

I have even proved that I am able to pay it off comfortably with my salary. 

I have went to almost every Muslim dealership and all have rejected. 

I am able to get a car on bank finance but I do not wish to because of the interest. 

Is there any other way of doing it? Is there any other alternative to this?

Spotting while pregnant

Q: I suspect that I am pregnant. I saw some pink spotting and regarded it as haidh. The next day I did a pregnancy test which was positive. However I am still not 100% sure that I am pregnant. I am still not experiencing haidh like I usually do. Should I consider myself in the state of haidh ?

Accumulating interest money with the intention of using it later

Q: Previously I should donate any interest accrued monthly. 

My father said I rather keep it because he will be buying a big property within a year or two, and we can use the interest for paying the property taxes, municipal rates, etc. which are exorbitant. 

Would this be okay - to withhold the interest for sometime with the intention of paying taxes?