Long period

I got my period last Friday and like usual it slowed down and was pretty much gone by Wednesday. However on Thursday it was like my period started all over again and it was so so heavy. I still have my period today (Friday), and it doesn't seem like it is going to end any time soon as it is still so heavy, like its the 2nd day. 
Usually my period lasts anywhere from 4-5 days but it's been 7 and I think it'll be much longer... 
Is this normal?