Wondering if pregnant

OK guys so on last Thursday me and my bf got down and dirty however, for the past couple of days I've been having period like cramps a week before period and my period is not due until next week Friday the 27th of May. Also I been urinating no more than twice during the night, having sore boobs, and backaches. And my mother had a dream that I was preggs! Lol Could I definitely be pregnant.??