Hi Danni, yes hair and nails are both made of a substance called "hard keratin" but they can react in different ways. Is your hair drier than normal? were you more oily before? if you were more oily, this would explain why it feels better than usual and your nails are more brittle (ie less moisture). If not - you are still normal. Like each pregnancy is different - each persons body reacts differently. I have seen people with dead straight hair turn to ringlets because they are pg.

Keep up with the moisturiser!!

PS. so cant believe that you so far already!!!!