Nervous

So I have to tell my parents that I’m pregnant I mean I’m 23 this will be my second baby. My oldest is 4years old and I’m not exactly in great financial standing but still very excited for a baby. My parents have never been very supportive of my life choices I didn’t follow their plan for me. I’m not married which upsets them but it’s my life to choose to do what I will with it. I am however in a happy committed relationship that will progress to marriage as soon as we have the money to do so. Any additive in how I should tell them. I’ve kept it from them for as long as possible but it’s getting hard to hide the bump.