My boyfriend and I had sex using a condom and it broke. I took Take Action, the generic Plan b 72 hours later. I was ovulating around the time we had sex. And a few days after I started lightly spotting for about 3-4 days. A light brown blood, just enough blood to have to use a light flow tampon. I've been extremely exhausted, slightly nauseous, moody and have had cramps for over two weeks know. Every day it feels like I could possibly start my period because of the mild cramping, but I never do. I've taken multiple tests and they have come back negative.
Any thoughts on what could be going on?