so a week before my period I had unprotected sex , we used the pullout method. Same thing happened a day before I was supposed to get my period. I gpt my period 2 days later. Really bloody 1st and 2nd day and fairly light the 3rd day. keep in mind my periods usually last 4-5 days. it’s been a couple days since then and currently I feel a little nauseous. Is there some possible way I could be pregnant?