Well me and my boyfriend had sex on may 3rd, 4th, and 5th without protection. My last period started on April 21st. On the 14th of may i started getting pink spotting, but it was barely enoughto fill a pad in one day. Then it quit and started again the next day then quite again. I have been having headaches, and i have blue veins on my breasts and they are also sore. Is there a chance i could be pregnant?