Blood type affecting fertility?!

I just found out about this today.... though this article (http://www.webmd.com/infertility-and-reproduction/news/20101025/blood-type-o-linked-fertility-problems) is from 2010 and says more studies need to be done.

I'm just hoping that by trying to be responsible and waiting I haven't missed my prime fertility (I'm 28 in three months, with O+ blood).