Could this be it?

My periods late this month and I'm always on time and have the same symptoms every time. I mean my period is like clockwork it always come around 9-11 in the morning and I haven't had any symptoms and I don't wanna get my hopes up but the past few months my periods gone down from 5 to two days and was wondering if there's anything wrong? I would love to be pregnant but I just don't think that's it any help would be appreciated