Confused ?! I need answers

Jackie

So I went to the restroom earlier today and I saw blood it was a decent amount so I thought my period came down cause I'm suppose to start but I went to the restroom again just now and there was no blood what so ever . I'm 1 day late on my period . Am I just over reacting and my period is gonna come down soon or was that blood something else ? I always feel cramps before I start and I haven't felt anything .