Am I pregnant!? HELP!

My boyfriend had unprotected sex on October 8th. Two week I after and a few days before my missed period I thought I was pregnant because I was experiencing hot flashes, increased scent, and nausea after I ate along with futquie and moodiness . I got my period the 27th and it lasted a few days. So I was relieved. But now I'm moody, tired, hungry all the time, and constantly nauseous. I threw up 3-4 times last night and 2 this morning. Is it possible Im pregnant when when I got my period? Help please