16 & Pregnant...How to tell a Strict Mom

So I was 26 days late when I found out I was positively pregnant.So far only 3 of my most closes friends know but the Father doesnt,he is currently in the Marines and I dont see him very much.Im only 16 and I have a Strict mother who I feel would be disappointed and angry ,but personally I Dont want babies ever...I'm more focused on my work and I would like it to stay that way for a long time since I know in my heart I just am not a baby person.My mom knows this but I dont want her to think I'm a hypocrite, and got myself one. I know she will support me in any decision I make with it but I dont want to lose the trust I've built for so long.So I dont really know how to tell her That I'm pregnant but dont want it.