I don’t know what to do

I just found out I’m pregnant again with my second child . I have a 2 year old and I’m 19 about to be 20 . I’m kinda nervous and don’t know what to do I feel like me and my husband isn’t ready for another one, I’m not telling my family or his because during my first they keep telling me how I can’t do this and my husband family called me a whore so we agreed not to tell them till the baby is born to not stress me out same with my family because I know they will just tell me how I won’t be able to raise another one. I just don’t know what to do , I’m scared and nervous.