I'd like not to freak out 😂

Hi everybody, so me and my bf always had sex with condom on, never done anything without it. Now I'm 6 days late and my back has been hurting now and then and I feel super emotional and stuff like that, also there's white discharge down there and idk, I'm just freaking out even if it might not be anything but I always had my period on time every month. What should I do?