HELP PLEASE

Okay so I might be pregnant, but I’m waiting for my period to come first. I’m kinda experiencing some symptoms but idk yet. BUT my main thing is if I am, HOW DO I TELL MY MOM?!? I’m 14 and she finest know I’ve been sexually active since 13. How do I tell her without getting kicked tf out?! And idk of the boy that I had sex with would stay if I’m pregnant😭. Idk what to do I’m freaking out!