The eating is probably nothing. Too early for anything like that and I get that with pms (unfortunately). It's still early to tell if pregnancy happened. While some women do report implantation bleeding, it's really not all that common. If your period doesn't show, take a test. Normally we can get a positive test at 2.5 weeks after the episode. So, wait a few more days and you'll 'know'. Let us know, okay?