Yes
NO,
Yes.
yes
see a doctor for such questions
yes
yes
see a doctor for such questions
no problem
yes, he can. If boy blood group A positive or any other such as B or O positive and girl have A, B, or O, or AB negative then can be danger for offspring. If she already have positive blood group, there is no danger.
you can marry anyone you want
you can marry anyone you want
don't see why not.