Bleeding After 15 Days of Missed Period

Marissa

So I started bleeding today, not sure if it's my period (why it's two weeks late, did research on possibilities already), or if I was pregnant and miscarrying. There's soft blood clots and stringy/stretchy cervical mucus (like the egg whites) but bloody. Sorry TMI. Is this normal since my period was delayed, or am I having a miscarriage? I'm cramping really bad, but that may seem normal with periods too.