terrified of having 2

Hi my name is Sabrina I'm 27 and from Las Vegas...So I just found out this past week that I'm 7weeks pregnant with my second child.i already have a baby girl that's 11 months.im really scared of having 2 under 2.anyone else experiencing this as well and or has been through this.any advice on how to keep my second pregnancy as healthy as my first(no complications) seeing as I have to always pick up my daughter and I'm not always able to nap and rest.