Am I possibly pregnant???

Kristina
About over 2 weeks ago my boyfriend and I had unprotected sex. Before him and I started dating I had tried to have a baby with my ex fiancé for 8 months and no results. I assumed I wasn't fertile and I was the problem... I am currently 3 days late on my period and whenever I was showering I noticed my breast are a lot sore then ever before. I am going to take a test at the end of the month but i don't know what to make of this. I've felt fatigue, cramps (harsher cramps then ever), and soreness of my breast. Could this be the earliest sign of pregnancy? Help needed and advice. I'm about to honorably discharged from the army and my boyfriend is about to go overseas to Germany so having a baby at this moment will be difficult. Thank you 😁