I'm scared.... My mom won't let me get the shot...

Please don't judge me... I'm 16 and pregnant. My mom was disappointed and called me a whore... After she calmed down she took me to my first appointment. I found out the baby isn't where it should be. It's in one of my tubes. My doctor wanted to give me an injection to stop it from growing, but my mom said we aren't aborting this baby. She said I've already sinned and I will not sin by being a murderer. She told me God will help and this pregnancy will be a miracle. But the doctor said my tube could rupture and possibly kill me. That scared me. My mom told her to shut up and I wasn't getting it and she made me leave.... I've been researching ectopic pregnancies and I'm terrified! My mom keeps saying it will be a miracle... If I was to get a ride from my boyfriend back to the doctors office could I get the injection without her consent or am I just gonna have to wait for my tube to rupture. And what would I tell my mom?😔