Abortion

So there is a high possibility that I could be pregnant and I’m having a lot of pregnancy symptoms and getting a lot of signs. I’m 18 and my mom knows I had sex but I feel like if I was to get an abortion she would kill me. I want one because I shouldn’t have had sex with the person I did and I was using sex to deal with other problems in my life. I know I’m not ready to bring a kid into this world financially, physically or mentally. Has anyone ever been in this situation and went through with it ?