I have a question about implantation bleeding. So, 5 days ago I started bleeding and it wasn't like dark it was a pinkish color. I had unprotected sex 3 days before.. It's not my period because my next period I'm not expecting for another 2 weeks. I've been having nausea, back pain, cramps, fatigue, mood swings and sensitivity in my breast .. I took a pregnancy test and it came out negative but it was too early I think. Like a day after I stopped bleeding and I was spotting for about 2 days with no pain at all. Could I be pregnant?