Prepping for baby!

Megan
Ok, just found out I was pregnant last week with baby number two! It's been such a LLLLLOOOOONNNNGGGGG journey for our second bundle of joy... With that being said.. My friend is pregnant with her first and she has been telling me how I should prepare for baby number two (like I haven't already done this once) not that I am happy she cares enough to give her input but I'm a very organized person who is a very strict planner... So here am I am asking for your opinions... 
When did you start planning for baby? As soon as you got a positive pregnant test or after your first appointment?
*i am not currently going out and buying a nursery set just yet but I am planning for what I like for both a boy nursery and a girl and I am getting ideas and searching the Internet for gently used swings, rock and plays, car seats, monitors, etc...