Hello..just want to know something. My last period was Aug.30-Sept.4 2014. I had unprotected sex Sept.6,7,9,13.my boyfriend cum in me everytime we had sex. I had my period again Sept.27-30 its not so heavy unlike my regular period.and it only lasted for three days.usually my period lasted for 5-6 days. Its just a strange feeling because.this past few days i keep throwing up,and not much like to eat.but i still eat on time.i can feel lower backache,and nausea. And i feel always tired then suddenly got a mild headache.I am just wondering if its still possible that i am pregnant..well we are tryingto concieve though. I had tried hpt last oct.3 but its negative.hope to get an answer as soon as possible.thanks.