Bleeding outside my period

Moriah

So, about a week ago, I started bleeding “down there”. My period was two weeks ago, but I’ve been stressed so I didn’t really think much of it. Well now it’s fairly heavy, about as heavy as my period minus the clotting. I am on the pill and have been for a year or so. Any ideas as to what’s going on? Some people I’ve asked say I’m pregnant, some say it’s just stress. I have no idea, but I’m kind of worried