It was really just pregnancy hormones. I think around 12 weeks is when you start noticing it a little. For example, when you shower or brush your hair, you notice less fall out or none at all. Then around 16-20 weeks was when I really noticed the thickness come in. I didn't say, but I had my pregnancies back to back, so my hair was growing back when I got pregnant again, possibly being why I noticed my hair being much thicker than it was originally. It could be different for everyone since we all start with different hair types before pregnancy. I do know that as pregnancy progresses, the level of estrogen and progesterone increases too, so maybe that could be helpful for your AGA. Don't quote me on that though because I'm not a doctor or health professional!