So my husband and I definitely had unprotected sex in my fertile window. My period was supposed to start last Wednesday and I took a test Friday (negative) and then my period started Saturday, or so I thought? It was totally different than normal color like more of a darker? Normally my period is 5 days and it only lasted 2. Just now I went to the bathroom and I have very very bright almost like bright pink blood when I wipe. Is it possible that I'm pregnant even though I had a 2 day "period"?