Hi Sarah,

Just wanted to let you know I made a mistake on where to purchase the doppler. U actually get it from KMART, not Target!! Sorry about that heheheh. Also, It works after 21 weeks so u may want to purchase a doppler from ebay if you like, just for your own peace of mind.

Then again, you could try and get the one from Kmart and see if you can hear anything, u never know