Bald spot? I cried all morning.

This morning while doing my hair I noticed a spot in my part that didn't look right and this is what I found. I'm 15 weeks pregnant and have never had a problem like this before and now I'm kind of freaking out. I'm at the point in pregnancy where I'm really struggling with self-image because I just feel like I look fat and this piled on top of that this morning was really just more than I can handle. Has anyone experienced anything like this? I have a doctors appointment on the 30th. Should I go see her before then? I'm just kind of at a loss and never really expected anything like this to be an issue. the rest of my pregnancy has been a breeze.