I’m really confused!! Help??

Hey ladies! I have some weird or odd things going on I’m not too sure about and I was wondering if any of y’all had similar things going on? I was supposed to start my period on Thursday but I started Tuesday, mild cramping and “light” flow. Wednesday was the same way. Thursday I had “spotting”-really the only way I can describe it. And yesterday, I had hardly any blood at all(I used liners rather than pads). I’m still having mild cramping but only in one side of my uterus. Any ideas? Thank you in advance :)