Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great when used properly

I gave birth to my first child on January 24, 2006 and hadn't really given much thought to a pump. However, once the baby came, my breasts would get so full that I knew I needed to pump. I put this one on my registry and I feel it was a good buy. At first, it hurt because my nipple was placed inside incorrectly and I didn't realize I could adjust the settings to loosen the grip. Once I read over the instructions and watched the instructive CD included inside, it worked wonderfully. So I say, like breastfeeding, do it right, and it's not supposed to hurt one bit!