I actually had the same thing. I'm not 100% sure when I should get my period (don't keep track) but I thought I was getting it last week but only spotted for a day and then again 2 days later and now nothing. I'm not sure what that's all about. But I'm not trying to get pregnant so hopefully for me this was just a fluke. But I also was curious as to what else this could be. But yeah if you don't get your period get a test. With my two children I knew the day I didn't get my period I was pregnant cause I was always so regular. Good Luck
Ya, it could be implantation bleeding or your period's coming early. Buy some tests!
Could be implantation bleeding! Best thing to do is wait a week and if you dont get your period then test! :)