Im 15 and I might be prego. Please comment. I have no one to talk to about this.?

Me and my boyfriend had without a condom A LOT but he would always pull out before he come. Hes a senior in high school and im a sopre in high school we only been dating for a month in a half. Im pretty sure im pregnant....But like I don't know how to get the test. Cause I really don't wanna tell my mom I might be pregnant if im really not. Like my upper back hurts and my lower back hurts. My lower left side is sore and like my stomach has this bump and lower abdominal hurts, and it feels weird to sleep on my belly. My are kinda sore. I feel dizzy when I get up. And I get head aces a lot. And my pee smells funny. What do I do please comment...