So me and my boyfriend had unprotected sex Saturday and for the past few days I've been feeling super nauseous on and off and today I've been cramping a lot I'm not sure if I maybe actually be pregnant and the egg is settling in my uterus or if it's something else I have an urge to take a test but it's too soon someone tell me my possibilities

P.S. if I am he's gonna be really upset because he told me he's not ready to have a child even though he has 2 jobs and I'm working on getting a better one or two