Could this be it?!

So I was ovulating on the 15th.. the tww is killing Me! I'm trying not to think too much into things, but on Sunday I had very light spotting (never usually happens) and I started getting cramps periodically since Friday. I've been exhausted and I'm super hungry ALL THE TIME! I'm hoping the spotting was implantation bleeding.. I have been TTC for over 2 years and this is our first cycle using pre seed.. anyone have anything like this happen? I'll be 10dpo on Thursday and I'm jumping out of my skin hoping that this could be It!