Okay soon my lmp was feb 24, 2014 & it lasted until March 13, 2014. That last day began my fertile period. I had sex with my boyfriend the next day unprotected, for 3 days. I ovulated somewhere between the 13th & the 18th. On the were 0th of March I had pain in my lower left side where my ovaries are & my nipples became sore. After that I experienced nausea, my boobs extremely sensitive, & peeling, very thirsty, & last Thursday my period was supposed to come but instead I had chills, mood swings, & cramping below my belly button. That night I craved soy sauce. I also had spells of hot & cold. My period finally came on the 30th. But now I'm having heartburn, back pain, frequent urination. Could I be pregnant?