It's HORMONES! Just back from the eye doctor with my 12 dd. We were checking out which frames she wanted. Well, she went right for the $300+ ones! Of course, we did not get those but it was a struggle to find a reasonably price frame that would not cramp her style. Ugh...
Know you are not alone and we were once this age. I remember my mother, laughing so loud at the OB's, when she found out I was having a girl the first time. "Oh, payback my dear is lovely." Yes, I went on to have two. If I had been fortunate to have more children, I bet they would have all been girls so I could pay for the drama I sure I shared with my folks at this crazy age.
Enjoy, it's all we can do.. or try to.