I am almost five months postpartum, and I have noticed over the past month or so that my hairline seems to have thinned out a bit. I can't attribute it to anything other than pregnancy, as I haven't had my hair under any stress, like tight hairstyles. Strangely, the rest of my hair seems to be growing superfast and is quite thick and voluminous. However, the first half inch or so of my hairline is thinner. What can I do? Or do I just wait it out?