Im 20 years old i weight 174 and my height is 5'4 My period lasts 5 days, I normally have a heavy flow the first 3 days an the last 2 days it's smooth, I got my period on April the 4th and it lasted 9 days, the first day i was spotting and had bad cramps, then from the 2nd to 6th day i had a heavy flow and the last 3 days I was spotting. This month I have not gotten my period and have no signs, what I noticed is that i have been having pains in my right uterus, and I also felt something pop, I have felt alot of fluttering in my uterus, I get fatigued easily, tired,dizzy, sleepy and have been too emotional. I can't stand for a long time because my lowerback starts hurting, could that be a sign I'm pregnant? What are the chances I could be pregnant, when I have had unprotected sex and the has been ejaculation inside?