Taking birth control pills

Q: I am a first time mum and my baby is almost three months. I feel I might be pregnant due to not getting my menses on time. Is it permissible for me to take a pill? I feel my child is still too small and I don't want her right of being breastsfed not be fulfilled to her stipulated age. However, I just feel I could be pregnant. It is not for certain.

Using interest money for medical treatment and constructing toilets

Q:

1. Is it permissible to take money from an NGO or Charitable trust for medical treatment (Person who needs the money isn't capable enough to manage the expenditure)

2. Can we use interest money (Savings Bank account) for medical treatment of poor people.

3. Is it permissible to use money from interest received from a non Islamic bank for the purpose of construction of his/her own toilet.

Making enquiries regarding the aqaaid of the person one wishes to marry

Q: I am engaged but I am unclear about the boys deeni committments. I think he doesn't know much about deen as he says that he is a simple Muslim and thats it. Can you please guide me as to what questions should my family ask him in order for the the nikah to be valid? Is it necessary to question his aqaaid if he offers namaaz?