breastfeeding

Q: How do you calculate two years of breast feeding? Say someone started breast feeding on the 5th Muharram, would the time limit be exactly on the 5th Muharram two years later or do you calculate it like iddat which would result in 24x30=720?

Q: I wanted to know what is the masala with regards to someone else's child drinking your breastmilk? Does the woman become the foster mother only if a certain amount is drank... and is it necessary to be drank from the breast or even if the child drank it from a bottle?

Q: I didn't know that a mother can breastfeed her baby upto two years. I am feeding my baby boy till now and he is already 2 1/4 years. I have committed sin .What should I do?

Q: There are two sisters (Amna and Zulaika) and their mother died. After the death of their mother their father got married to Nasreen. The step mother of Amna and Zulaika (Nasreen) breastfed Amna's son Taimoor her milk. Can Taimoor perform nikah with his cousin who is the daughter of Zulaika? 

Q: Three years ago I heard my aunt saying that she once gave me drink from my cousins bottle and I think she turned to me and said "your cousin is your foster sister " im not sure if I heard that other if that's just in my head..my aunt said that infront of my baby brother who was breastfeeding at that time .. now I asked my aunt about the matter she said "it must of been cow milk or something "but I fear she might be forgetting I really don't want any problems in the hereafter so under the most strict islamic law am i allowed to marry my cousin? I have doubt I still think there is a chance I could of drank her breast milk and she is forgetting