What is wrong with my body?

So I have a larger butt and my shoulders are proportional with my butt. My hips are 44". My waist is 28". I'm currently breastfeeding and my bust is about 36-37" but pre pregnancy bust is about 34-35" maybe even 33"-34". I don't understand why my breasts are so small compared to the rest of my body. Is there something wrong or deformed about my body? What conditions would cause this kind of figure. I have a lot of mood issues and parts of my body that look estrogen rich so it would have me believe I have higher estrogen level however that would also cause me to have larger breasts and I don't. So I don't understand it.