Am i pregnant

Patient: I am 15 and really want a baby even though i am young , i have recently had sex with my boyfriend about a week ago and we did it when i was ovulating (according to an ovulation test) and about two days later i started feeling cramps in the lower part of my stomach , ive been hot/sweaty , really moody , and tired i know it could be signs of me about to get my period but ive never had these symptoms before and i want advice before i get a pregnancy test xx