My husband and I went through the same thing after our first child - so I totally know how you feel! One month he would want another and I wouldn't, and then vice versa the next month. It was a nice feeling of not having to decide, and if we were asked questions about it, we always blamed the other person (I would, but he doesn't want to right now -- really got the in-laws off our backs!)
Well, while we were deciding, we got lazy with the protection, and let God decide for us . . . so would I have chosen to have another on purpose? I don't really know, but now that we have him, how blessed we are! Isn't that the way with children.
All this to say . . . if you can't decide right now . . . do you need to decide right now? Perhaps you will be clearer next month . . . or the month after . . .
I also found a great resource to help me from going crazy with 2 children (another baby really did throw me for a loop!). YOU are amazing to deal with 3 and twins!
Check out the Compass resource at my profile at www.MyLifeCompass.com/NicoleSteiman -- there is a 12 week challenge going on in the area of Life Balance. It has literally changed my life, and helped me get clearer about my priorities every day!
Blessings and good luck!
N.