plz help i am 18 had unprotected sex my bf ejaculate 11 times which was 2weeks before my period ,the week after we had sex i started to feel really sick with back pain,swollen breast,fatigue,cramps headaches and urinating more often than usual and my bf is feeling sick to always tired and have dizziness .i didnt miss my period on the day for my period i was bleeding pink with lower back pain can i be pregnant? plz reply