I was supposed to have my period April 21 but I was not experiencing any of my usual pms symptoms like sore breasts and bloating, I had unprotected sex but did a withdrawal the night of April 20, a day before my expected period. When my period did not came till April 22, I drank nordette as an ECP (it's already my 3rd time using it). Earlier today (May 1) I saw few blood on my underwear, it looks a somewhat sticky and clumpy and dark red to brown in color. In addition, I still don't feel any of my usual pms symptoms aside from my nipple area feels sore on one breast but not on the other. Could I be pregnant?