Feeling down.

Okay, so I just had my son about 5 weeks ago, and don't get me wrong I look great and I'm only 7lbs away from prepregnancy weight. But, for some reason I'm just depressed about how I look. For example, I dyed my hair and felt great for about 3 weeks. Now, I feel as though I'm just meh again like I dont look as good as I've wanted to. Anyone else ever feel like that?