Severely concerned about my current period! HELP!?

Anonymous
Okay, so three days ago I got my period. It is now 10:30 p. m. and I'm almost already in my fourth day. Usually, the first day of my period is heavy then by the third of fourth day it is completely gone or very very light. It is still VERY heavy and I am having to change my tampon and pad every 30 minutes (sorry for details). And I'm having cramps that are so painful they're almost crippling. The thing that is concerning me most though is the clotting. I almost never have any clotting whatsoever during my periods. But, today and yesterday i am having very big very solid clots and they are coming out VERY frequently. I would call my doctor but Thanksgiving is tomorrow and it is already 10:30 at night. I don't know whether to consider this an emergency or not.. I'm really concerned. Please help if you think you know what could be going on. Thanks!
Updates
+1 y
Also, my period was about two weeks late if that means anything.
Severely concerned about my current period! HELP!?
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