That's a great motivation, buyjupiter. There could be some social need to identify him (publicly) before the child is born. So it's something she needs to do, both for herself and for the kid. Entirely convincing.
oh yeah, pregnancy hair! i totally forgot. With my first child (I say my first, but I had a miscarriage before my first child, so still the "first" to me because it was the first to get past eight weeks), I had luxurious long hair, down past my butt. It was so wonderful! With the later three, strawlike hair that didn't look luxurious. Go figure...