Lilian,
Congrats on the soon to be new addition. We are expecting a boy and couldn't wait to find out. Before we knew the gender we just bought a few well more than a few neutral items. I'm not really into the pink and blue's anyway so pretty much everything we got initially including the car seat (which is light blue) could be used by both.
I'm in the military so my family doesn't live nearby so no baby shower for me. So I wont have any items to return.
Best of luck to you and yours.
Cindy