Some say it sways pink, I believe it is totally neutral after seeing a very even split with short LP and people with all boys and all girls.
What the real concern is, is twofold. First concern is that it's been proven pretty definitively that prog supps do not help anyone get or stay pregnant. And secondly, if you have just had a baby in Feb. of 2016, the reason your LP is short is because your body is not super ready to get pregnant again. The short LP is a way of "nature's birth control" because your body may not be ready to get pregnant yet, and this may mean you are more "set" for a girl than a boy.
What you have described above, first cycle after stopping breastfeeding, that is totally normal for that first month to be an oddball one.
I know some of you guys are super antsy to get TTC again but I think you should be patient for best results and hold off at least till 12 months between kiddos, and more like 18 is better. But you gotta do what you gotta do.