Overwhelmed!!

I am feeling so overwhelmed, I am 27 wks now, and haven't gotten anything ready for baby. I haven't purchased a piece of furniture, and only gotten a few outfits. So far all we've accomplished was painting babies room, we still have to gloss the hardwood floors. I have had so much going on lately, that I haven't gotten around to doing much. My shower isn't until late August. I feel I'm so far behind, and it's making me crazy. I get headaches just thinking of not being prepared. I need some reassurance that everything will work out, besides me and hubby going at it because of how much I worry that we won't be prepared :(