After having unprotected sex I took an emergency contracrptive pill the next day. Had my periods regularly for two months after that, then my periods stopped for three full months, my periods are usually irregular so I wasn't worried. My periods started again from yesterday, no unusual spottings. Could I still be pregnant? I heard that we can be pregnant even if we have periods. I don't feel sick, bloated, nauseous or anythn of that sort.