Over thinking!

Melissa • Married to the love of my life! Had my sweet Madison on 07/31/15 and now due with baby #2 Oct' 16.
I can't help but feel under prepared, we have all the essentials but i still feel the need to constantly research and try to find anything I'm missing. I've already over packed her diaper bag for the hospital. Rather be safe than sorry. But I can't kick this feeling of not being ready. It's only getting more intense. Everytime we go to the store almost everything I buy is for my little Madison. Lol is this part of the nesting? I'm a FTM. Is anyone else feeling like this?