I remember these same feelings - I was going from working fulltime to being off for 3 months. I honestly don't know how we did it, but it all worked out fine! I went back to work parttime, and again, I don't know how we did without my fulltime salary, but we did just fine.
My daughter just had a baby and she shops regularly at the consignment stores. You can usually find clothes with the tags still on. As for playpens, toys, strollers etc. they are dirt cheap at the consignment stores. Also, watch for sales at the regular stores. For example, Carter's baby store regularly has 1/2 price sales - EVERYTHING in the store is 1/2 price.
It will be fine - don't worry!!!
