Help please

Ashane

So I am 16 days late. 2 days before my period was due I had spotting for about 30 minutes. Fast forward to 14 days late, late st night I had a bad cramp on my right side. The next day at work, I thought I started my cycle (pinkish red blood) but by the end of my shift, there was nothing but a tiny dark red clot. Now I have no trace of bleeding. Any idea on what this could be?