Cohabitation is more common and accepted than it has been in the past, and many couples choose it when they don't want to deal with the legal and financial sides of a marriage. Further, staying unmarried means a split can be easier and faster if and when it comes. However, there are some things that couples may want to consider before they move in together.
If you and your significant other are not married and you're filing your tax returns separately, you're both going to be thinking about your child, as you do get a bit of a tax break if you have a kid. However, it is very important to note that you are not both allowed to claim that the child is your dependent, thus getting the break on both sides. Only one of you can claim the child for tax purposes.
Clearly, if a woman who is pregnant gives her consent to allow the unborn child's father to see the results of health tests and checkups, he's allowed to see them. However, can he still see them--on the grounds that it is also his child--if she doesn't want him to?