What does it mean when...????

What does it mean when you start your period again after seven days??well I think I started it again. I went to the bathroom and saw blood kinda like spotting. Anyone?

Update:

So I did research and saw that it could be because I took plan B pill. I had sex before my period and didn't take the plan b I heard that I could take it up to five days. Then I had a period and my partner and I had sex again a week after my period ended I took the plan B that night and now I had like a blood clog medium of I think a period. So now I'm question is how long will this last? And should I be concern as well as tell my partner ? He's been asking if I'm feeling okay. I have period symptoms like hot flash an nauseousness and headaches... will this also alternate a change in my period?

Update update:

Been spotting or bleeding for about 3-4?days not sure if it's a period or just spotting. And then today I'm ovulating like crazy. It watery and I honestly thought I started my period again... good news or bad?